Brief Records : EPA National Library Catalog

Items Found: 749
Showing Items: 701 - 725
Your Search: (SUBJECT=Biomass)

PREV 1 ... 19 20 21 22 23 24 25 26 27 28 29 30 NEXT
Document Number: 701 Full Record
Main Title The regional feedstock partnership : herbaceous energy crops and CRP land for biomass production across environmental gradients /
Author Owens, Vance,
Publisher South Dakota State University,
Year Published 2009
OCLC Number 1156988476
Subjects Biomass energy--United States ; Renewable energy sources--United States ; Motor fuels--Environmental aspects--United States
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
ELBM  TP339.O94 2009 AWBERC Library/Cincinnati,OH 06/08/2020
Collation 35 unnumbered pages : color illustrations ; 22 x 28 cm

Document Number: 702 Full Record
Main Title The remote estimation of a grassland canopy : its biomass chlorophyll, leaf water, and underlying soil spectra /
Author Tucker, C. J.
Other Authors
Author Title of a Work
Miller, L. D.
Publisher Natural Resource Ecology Laboratory, Colorado State University,
Year Published 1973
OCLC Number 15191972
Subjects Grassland ecology ; Biomass energy--Remote sensing
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
ESBD  100 COL NREL TR-237 CPHEA/PESD Library/Corvallis,OR 12/27/2016 DISPERSAL
Collation 212 pages : illustrations, tables ; 28 cm.

Document Number: 703 Full Record
Main Title The renewable fuel standard : issues for 2014 and beyond /
Author Dinan, Terry,
Other Authors
Author Title of a Work
Gecan, Ronald William,
Austin, David,
Publisher Congress of the United States, Congressional Budget Office,
Year Published 2014
OCLC Number 1334678207
Subjects Renewable energy sources--Standards--United States--Evaluation ; Biomass energy--Standards--United States--Evaluation ; Energy policy--United States
Internet Access
Description Access URL
https://purl.fdlp.gov/GPO/gpo156183
http://www.cbo.gov/sites/default/files/45477-Biofuels2.pdf
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
ELBM  TJ807.9.U6R46 2014 AWBERC Library/Cincinnati,OH 07/13/2022
Collation 35 pages : figures (some colored), tables ; 28 cm

Document Number: 704 Full Record
Main Title The role of green chemistry in biomass processing and conversion /
Other Authors
Author Title of a Work
Xie, Haibo,
Gathergood, Nick,
Publisher Wiley,
Year Published 2013
OCLC Number 795645035
ISBN 9780470644102 (cloth); 0470644109 (cloth)
Subjects Green chemistry ; Biomass energy ; Environmental chemistry--Industrial applications
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
ELBM  TP155.2.E58R65 2013 AWBERC Library/Cincinnati,OH 11/03/2014
Collation xvii, 475 pages : illustrations ; 25 cm

Document Number: 705 Full Record
Main Title The Strait of Juan de Fuca intertidal and subtidal benthos : second annual report, Spring 1977 - Winter 1978 /
Author Nyblade, Carl. ; Nyblade, Carl F.
CORP Author Washington Univ., Friday Harbor. Friday Harbor Labs.;Environmental Protection Agency, Washington, DC.
Publisher Office of Energy, Minerals, and Industry, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1979
Report Number EPA-600-7-79-213
Stock Number PB80-142136
OCLC Number 06559966
Subjects Benthos--Juan de Fuca, Strait of (BC and Wash) ; Marine biology--Juan de Fuca, Strait of (BC and Wash) ; Pacific Ocean--Strait of Juan de Fuca ; Benthos--Juan de Fuca Strait (BC and Wash) ; Marine biology--Juan de Fuca Strait (BC and Wash)
Additional Subjects Benthos ; Aquatic animals ; Juan de Fuca Strait ; Marine biology ; Intertidal zone ; Algae ; Crustacea ; Mollusca ; Insects ; Nematoda ; Annelida ; Seasonal variations ; Abundance ; Biomass ; Oil pollution ; Tables(Data) ; Washington(State) ; Coasts ; Species diversity ; Baseline studies
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101MS6Z.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD  EPA 600-7-79-213 Headquarters Library/Washington,DC 04/06/2016
EKCD  EPA-600/7-79-213 CEMM/GEMMD Library/Gulf Breeze,FL 08/21/2018
ELBD ARCHIVE EPA 600-7-79-213 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-7-79-213 Region 10 Library/Seattle,WA 07/29/2005
NTIS  PB80-142136 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xii, 129 pages : illustrations ; 28 cm

Document Number: 706 Full Record
Main Title Thermal conversion of solid wastes and biomass : based on a symposium /
Author Jones, J. L. ; Radding, Shirley B.
Other Authors
Author Title of a Work
ACS symposium series
130. American Chemical Society.
CORP Author American Chemical Society.; American Chemical Society. Division of Environmental Chemistry.
Publisher American Chemical Society,
Year Published 1980
OCLC Number 06251731
ISBN 0841205655; 9780841205659
Subjects Waste products as fuel--Congresses ; Biomass energy--Congresses ; Fuels
Additional Subjects Waste products as fuel--Congresses ; Biomass energy--Congresses
Internet Access
Description Access URL
http://pubs.acs.org/doi/book/10.1021/bk-1980-0130
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
ELBM  TP360.T46 1980 AWBERC Library/Cincinnati,OH 01/01/1988
Collation xvii, 747 p. : ill. ; 24 cm.

Document Number: 707 Full Record
Main Title Thermochemical processing of biomass : conversion into fuels, chemicals and power /
Other Authors
Author Title of a Work
Brown, Robert C.
Publisher John Wiley & Sons,
Year Published 2011
OCLC Number 682892477
ISBN 9780470721117 (hardback); 0470721111 (hardback)
Subjects Biomass energy ; Thermochemistry ; Energy conversion ; SCIENCE / Chemistry / Organic
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJAM  TP339.T476 2011 Region 3 Library/Philadelphia, PA 10/22/2012
Collation xiv, 330 pages : illustrations ; 25 cm.

Document Number: 708 Full Record
Main Title Thirteenth Symposium on Biotechnology for Fuels and Chemicals : proceedings of the Thirteenth Symposium on Biotechnology for Fuels and Chemicals held May 6-10, 1991 at Colorado Springs, Colorado /
Other Authors
Author Title of a Work
Wyman, Charles.
Woodward, J.
Publisher Humana Press,
Year Published 1992
OCLC Number 25857209
Subjects Biomass energy--Congresses ; Biotechnology--Congresses ; Biomass chemicals--Congresses
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
ELCM  TP360.S935 1991 NVFEL Library/Ann Arbor, MI 12/05/1997
Collation iv, 834 p. : ill. ; 26 cm.

Document Number: 709 Full Record
Main Title Transient Phase between Growth and Nongrowth of Heterotrophic Bacteria, with Emphasis on the Marine Environment.
Author Kjelleberg, S. ; Hermansson, M. ; Maerden, P. ; Jones, G. W. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL. ;Goeteborg Univ. (Sweden). Dept. of Marine Microbiology. ;Michigan Univ., Ann Arbor.
Year Published 1987
Report Number EPA/600/J-87/259;
Stock Number PB88-182399
Additional Subjects Marine microorganisms ; Bacteria ; Growth ; Rivers ; Life cycles ; Substrates ; Nutrition ; Interfaces ; Cell division ; Microbiology ; Food chains ; Biomass ; Decomposition ; Public health ; Disease vectors ; Reprints ; Ecosystems ; Predation
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB88-182399 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 27p

Document Number: 710 Full Record
Main Title Transitioning to sustainability through research and development on ecosystem services and biofuels : workshop summary /
Other Authors
Author Title of a Work
Koshel, Patricia.
McAllister, Kathleen.
Publisher National Academies Press,
Year Published 2008
OCLC Number 231051825
ISBN 0309119820; 9780309119825
Subjects Biomass energy--Research--United States ; Energy crops--Research--United States ; Ecosystem management--Research--United States ; Sustainable living--Research--United States ; Energy policy--United States ; Environmental policy--United States ; Biomass energy--Research--United States--Congresses ; Energy crops--Research--United States--Congresses ; Ecosystem management--Research--United States--Congresses ; Sustainable living--Research--United States--Congresses ; Energy policy--United States--Congresses ; Environmental policy--United States--Congresses ; 0 Environmental policy ; 0 Energy conservation ; 0 Interdisciplinary research ; 0 Communication in science ; 0 Biomass energy
Internet Access
Description Access URL
National Academies Press http://www.nap.edu/catalog.php?record_id=12195
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
ELBM  HD9502.5.B543U68 2008 AWBERC Library/Cincinnati,OH 03/28/2018
EOAM  HD9502.5.B543U68 2008 Sustainability Collection Region 8 Technical Library/Denver,CO 11/12/2008
ESAM  TP360. T73 2008 Region 10 Library/Seattle,WA 07/25/2008
Collation xi, 118 pages : illustrations ; 23 cm

Document Number: 711 Full Record
Main Title Trawling bycatch in the Galveston Bay system
Author Martinez, Eduardo X.
Other Authors
Author Title of a Work
Nance, James Milton
CORP Author Galveston Bay National Estuary Program,, Austin, TX. ;National Marine Fisheries Service, Galveston, TX. Galveston Lab.;Environmental Protection Agency, Dallas, TX. Region VI.
Publisher Galveston Bay National Estuary Program,
Year Published 1993
Report Number GBNEP-34; EPA-CE-006550-01
Stock Number PB94-159043
OCLC Number 30018326
Subjects Bycatches (Fisheries)--Texas--Galveston Bay ; Trawls and trawling--Texas--Galveston Bay ; Galveston Bay (Tex)
Additional Subjects Shrimps ; Fishing ; Galveston Bay ; Surveys ; History ; Fishing grounds ; Hydrology ; Salinity ; Biomass ; Flatfishes ; Trout ; Crabs ; Species diversity ; Design criteria ; Graphs(Charts) ; Maps ; Ocean temperature ; Trawling ; Catch statistics ; Atlantic croker ; Menhaden fish ; Fishing vessels
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBM  SH222.T4 M37 1993 Headquarters Library/Washington,DC 05/15/2015
NTIS  PB94-159043 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xv, 185 p. : ill., maps ; 28 cm.

Document Number: 712 Full Record
Main Title Trends in the biology of fermentations for fuels and chemicals /
Author Hollaender, Alexander
Publisher Plenum Press,
Year Published 1981
OCLC Number 07551504
ISBN 0306407523; 9780306407529
Subjects Fermentation--Congresses ; Biomass energy--Congresses ; âEnergie de la biomasse--Congrès ; Fermentation--Congrès ; Microbiologie industrielle--Congrès
Additional Subjects Fermentation--Congresses ; Biomass energy--Congresses
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
ELBM  TP156.F4T73 1981 AWBERC Library/Cincinnati,OH 01/01/1988
Collation xii, 591 pages : illustrations ; 26 cm.

Document Number: 713 Full Record
Main Title Trophic Interactions in Experimental Marine Ecosystems Perturbed by Oil.
Author Elmgren, R. ; Vargo, G. A. ; Grassle, J. F. ; Grassle, J. P. ; Heinle, D. R. ;
CORP Author Rhode Island Univ., Kingston. Graduate School of Oceanography.;Environmental Research Lab., Narragansett, RI.
Year Published 1980
Report Number EPA-R-807795; EPA-600/D-82-214 ; ERLN-X35
Stock Number PB82-181959
Additional Subjects Phytoplankton ; Ecology ; Oil pollution ; Fuel oil ; Sensitivity ; Growth ; Biomass ; Comparison ; Tanks(Containers) ; Nutrients ; Laboratories ; Reprints ; Ecosystems
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB82-181959 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 24p

Document Number: 714 Full Record
Main Title Trophic Level Interrelationships in Cayuga Lake, New York.
Author Hennic, Douglas G. ;
CORP Author Cornell Univ., Ithaca, N.Y. Water Resources and Marine Sciences Center.
Year Published 1973
Report Number TR-47; DI-14-31-0001-3832; OWRR-A-041-NY; 1903769,; A-041-NY(1)
Stock Number PB-227 233
Additional Subjects Cayuga Lake ; Food chains ; Zooplankton ; Surveys ; Biomass ; Growth ; Water resources ; New York ; Temperature ; Statistical data ; Limnology ; Alewife
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-227 233 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 92p

Document Number: 715 Full Record
Main Title Trophic Structure, Reproductive Success, and Growth Rate of Fishes in a Natural and Modified Headwater Stream.
Author Schlosser, Isaac J. ;
CORP Author Illinois Univ. at Urbana-Champaign. Dept. of Ecology, Ethology and Evolution.;Corvallis Environmental Research Lab., OR.
Year Published 1982
Report Number EPA-R-806391; EPA-600/J-82-335;
Stock Number PB83-222661
Additional Subjects Fishes ; Ecology ; Channel improvements ; Stream pollution ; Stream flow ; Reproduction(Biology) ; Biomass ; Growth ; Seasonal variations ; Substrates ; Tables(Data) ; Reprints ; Habitats ; Carpoides cyprinus ; Dorosoma cepedianum
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=2000TYR9.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB83-222661 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p

Document Number: 716 Full Record
Main Title Tropical Forests and the Global Carbon Cycle: Estimating State and Change in Biomass Density.
Author Brown, S. ;
CORP Author Illinois Univ. at Urbana-Champaign. Dept. of Forestry.;Corvallis Environmental Research Lab., OR.
Publisher 1996
Year Published 1996
Report Number EPA/600/A-96/039;
Stock Number PB96-184569
Additional Subjects Carbon cycle ; Tropical forests ; Forest trees ; Biomass ; Lumbering ; Clearcutting ; Burning ; Deforestation ; Biomass plantations ; Soils ; Carbon sinks ; Forest management ; Air-biosphere interactions ; Climate ; Asia ; South America ; Reprints ; Forest inventory ; Slash and burn
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB96-184569 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 18p

Document Number: 717 Full Record
Main Title Tropospheric nitrogen : the influence of anthropogenic sources on distributions and deposition /
Author Penner, J. E. ; Atherton, C. S. ; Walton, J. J.
Other Authors
Author Title of a Work
Altherton, C. S.
Walton, J. J.
CORP Author Lawrence Livermore National Lab., CA. Atmospheric and Geophysical Sciences Div.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher U.S. Environmental Protection Agency, Atmospheric Research and Exposure Assessment Laboratory,
Year Published 1991
Report Number EPA/600/3-91/070
Stock Number PB92-126937
Subjects Nitrogen oxides--Environmental aspects ; Nitrogen compounds--Environmental aspects
Additional Subjects Troposphere ; Nitrogen ; Atmospheric chemistry ; Air pollution sampling ; Mathematical models ; Deposition ; Natural emissions ; Combustion products ; Environmental transport ; General circulation model ; Biomass ; Burning ; Precipitation(Meteorology) ; Global aspects ; Mass transfer ; Mass balance ; Concentration(Composition)
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB92-126937 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 119 pages ; 28 cm

Document Number: 718 Full Record
Main Title Turning Great Plains crop residues and other products into energy
Author Heid, Walter George
Publisher U.S. Dept. of Agriculture, Economic Research Service,
Year Published 1984
OCLC Number 11804965
Subjects Biomass energy--Great Plains ; Crop residues--Great Plains
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBM  TP360 .H43 1984 Headquarters Library/Washington,DC 08/20/2015
Collation iv, 37 p. : maps ; 28 cm.

Document Number: 719 Full Record
Main Title Turnover of Extracellular DNA in Eutrophic and Oligotrophic Freshwater Environments of Southwest Florida.
Author Paul, J. H. ; Jeffrey, W. H. ; David, A. W. ; DeFlaun, M. F. ; Cazares., L. H. ;
CORP Author University of South Florida, St. Petersburg. Dept. of Marine Science.;Environmental Research Lab., Gulf Breeze, FL.;National Science Foundation, Washington, DC.
Publisher c1989
Year Published 1989
Report Number NSF-BSR86-01570; EPA/600/J-89/175;
Stock Number PB90-140823
Additional Subjects Deoxyribonucleic acids ; Fresh water ; Genetics ; Water microbiology ; Plankton ; Florida ; Biomass ; Tables(Data) ; Graphs(Charts) ; Aquatic microbiology ; Reprints ; Extracellular matrix ; Genetic engineering ; Chlorophyll ; Base sequence
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB90-140823 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p

Document Number: 720 Full Record
Main Title U.S. EPA Biomass Fuel Analytical Laboratory.
Author Baskin, E. ; Lee, C. W. ; Natschke, D. F. ;
CORP Author Acurex Environmental Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
Publisher Jan 97
Year Published 1997
Report Number EPA-68-D4-0005; EPA/600/A-98/019;
Stock Number PB98-140312
Additional Subjects Biomass conversion ; Combustion kinetics ; Refuse derived fuels ; Greenhouse gases ; Pyrolysis ; Emissions ; Combustion products ; Air pollution effects ; Global warming ; Greenhouse effect ; Thermogravimetry ; Thermoconductivity ; Fourier transform infrared spectroscopy ; Heat transfer ; Degradation ; Laboratory tests ;
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=P1011R0C.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB98-140312 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 12p

Document Number: 721 Full Record
Main Title UAF Radiorespirometric Protocol for Assessing Hydrocarbon Mineralization Potential in Environmental Samples.
Author Brown, E. J. ; Resnick, S. M. ; Rebstock, C. ; Luong, H. V. ; Lindstrom, J. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL. ;Alaska Univ., Fairbanks. Inst. of Northern Engineering. ;Technical Resources, Inc., Gulf Breeze, FL.
Publisher c1992
Year Published 1992
Report Number EPA/600/J-92/389;
Stock Number PB93-121218
Additional Subjects Land pollution control ; Oil pollution ; Water pollution control ; Biodeterioration ; Remedial action ; Hydrocarbons ; Oil spills ; Crude oil ; Microorganisms ; Sediments ; Mineralization ; Beaches ; Biomass ; Nitrogen ; Phosphorus ; Carbon dioxide ; Isotopic labeling ; Performance evaluation ; Reprints ; Exxon Valdez ; Radiorespirometry ; Cleanup operations
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB93-121218 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p

Document Number: 722 Full Record
Main Title Uncertainties in Countrywide Forest Biomass Estimates.
Author Peterson, C. E. ; Turner, D. P. ;
CORP Author Corvallis Environmental Research Lab., OR. ;ManTech Environmental Technology, Inc., Corvallis, OR.
Publisher 1992
Year Published 1992
Report Number EPA/600/A-93/011;
Stock Number PB93-149250
Additional Subjects Biomass ; Forest land ; Carbon cycle ; Error analysis ; Global aspects ; Study estimates ; Statistical analysis ; Organic matter ; Air land interactions ; Air pollution ; Uncertainty
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB93-149250 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p

Document Number: 723 Full Record
Main Title United Packing: Alcohol Feasibility Study.
CORP Author Brown and Caldwell, Walnut Creek, CA.;California State Solid Waste Management Board, Sacramento.
Year Published 1981
Stock Number PB82-178476
Additional Subjects Solid waste disposal ; Fruits ; Ethyl alcohol ; Biomass ; Sugars ; Fruit crops ; Cost analysis ; Capitalized costs ; Operating costs ; Utilization ; Substitutes ; Alcohol fuels ; Waste recycling ; Energy management ; Energy use ; Energy conservation
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB82-178476 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 83p

Document Number: 724 Full Record
Main Title USDA biofuels strategic production report : a USDA regional roadmap to meeting the biofuels goals of the renewable fuels standard by 2022.
Publisher USDA,
Year Published 2010
OCLC Number 1397024938
Subjects Biomass energy industries--United States ; Biomass energy--United States
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
ELBM  HD9502.5.B543U677 2010 AWBERC Library/Cincinnati,OH 09/21/2023
Collation 21 pages : color maps ; 28 cm.

Document Number: 725 Full Record
Main Title Use of Artificial Wetlands to Remove Nitrogen from Wastewater.
Author Gersberg, R. M. ; Elkins, B. V. ; Goldman, C. R. ;
CORP Author Ecological Research Associates, Davis, CA. ;San Diego Water Reclamation Agency, Santee, CA. ;California Univ., Davis. Div. of Environmental Studies.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Year Published 1984
Report Number EPA-R-807299; EPA-600/J-84-008;
Stock Number PB84-177518
Additional Subjects Aquaculture ; Denitrification ; Water reclamation ; Sewage treatment ; Nitrogen ; Substitutes ; Water quality ; Biomass ; Cost analysis ; Biochemical oxygen demand ; Methyl alcohol ; Plants(Botany) ; Vegetation ; Reprints ; Waste water reuse ; Wetlands ; Biological processes ; Santee(California)
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB84-177518 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p

PREV 1 ... 19 20 21 22 23 24 25 26 27 28 29 30 NEXT