Search Results for the EPA National Library Catalog

Items Found: 744
Showing: Items 601 - 650
Your Search: (SUBJECT=Productivity)


 
 
 
PREV 1 ... 4 5 6 7 8 9 10 11 12 13 14 15 NEXT
Select Item Title Year Published
Response of Estuarine Diatom Assemblages to Ultraviolet-B Radiation (290-320 nm). 1985
Rethinking program design : accompanying report of the National Performance Review, Office of the Vice President. 1994
Review of Methods for the Analysis of Chlorophyll in Periphyton and Plankton of Marine and Freshwater Systems. 1986
Review of the öStrategic plan for the Office of Research and Developmentö / 1996
Rock Lake, Jefferson County, Wisconsin. 1974
Role of Aquatic Vascular Plants in the Eutrophication of Selected Lakes in Western Massachusetts. 1967
Role of Organic Debris and Associated Micro-Organisms in Pelagic Estuarine Food Chains. 1973
Role of Sediments in Eutrophication - A Preliminary Study. 1972
Rome Pond, Jefferson County, Wisconsin. 1974
Round Lake, Saratoga County, New York. 1974
Sacandaga Reservoir, Fulton and Saratoga Counties, New York. 1974
Saginaw Bay: An Evaluation of Existing and Historical Conditions. 1974
Saint Clair River and Lake Saint Clair, Michigan: An Ecological Profile. 1988
Salton Sea, California. Water Quality and Ecological Management Considerations. 1970
Santeetlah Lake, Graham County, North Carolina. 1975
Saratoga Lake, Saratoga County, New York. 1974
Satellite vehicle waste collection systems / 1972
Schroon Lake, Essex and Warren Counties, New York. 1974
Seasonal Changes in Water Quality and Primary Productivity in Doe Valley Lake. 1974
Seasonal fluctuations of major diatom species at five stations across Lake Michigan : May 1970-October 1972 / 1980
Seasonal Variation of Potential Nutrient Limitation to Chlorophyll Production in Southern Lake Huron. 1981
Sebasticook Lake, Penobscot County, Maine. 1974
Section 74 seafood processing study : executive summary. Appendix, volume II : a report to the congress of the United States / 1980
Seneca Lake, Schuyler County, New York. 1974
Service to the public how effective and responsive is the government? : statement of Lawrence H. Thompson, Assistant Comptroller General, Human Resources Division, before the Committee on Ways and Means, House of Representative / 1991
Setting priorities, getting results : a new direction for the Environmental Protection Agency / 1995
Shawano Lake, Shawano County, Wisconsin. 1974
Shelbyville Reservoir, Moultrie and Shelby Counties, Illinois. 1975
Shenango River Reservoir, Mercer County, Pennsylvania. EPA Region III. 1975
Significance of Cellulose Production by Planktonic Algae in Lacustrine Environments. 1972
Simulation of the Hydrologic-Economic Flow System in an Agricultural Area. 1969
Sinissippi Lake, Dodge County, Wisconsin. 1974
Six Mile Lake, St. Louis County, Minnesota. 1974
Slatersville Reservoirs, Providence County, Rhode Island. 1974
Small Business Innovation Research: Success Stories. 2012
Soil Biology and Ecology. 1993
Soil degradation : effects on agricultural productivity / 1980
Soil organic matter in temperate agroecosystems : long-term experiments in North America / 1997
Soil organic matter studies : proceedings of a symposium on soil organic matter studies jointly organized by the International Atomic Energy Agency and the Food and Agriculture Organization of the United Nations, in co-operation with Agrochimica, and held in Braunschweig, 6-10 September 1976. 1977
Soil testing : correlating and interpreting the analytical results / 1977
Solid Waste Management Manpower - Profile and Analysis. 1978
Some Effects of Cadmium on Coniferous Forest Soil and Litter Microcosms. 1975
Specific production of aquatic invertebrates / 1973
Spring Lake, Washington and Dakota Counties, Minnesota. 1975
St. Louis Bay, St. Louis County, Minnesota, and Douglas County, Wisconsin. 1975
St. Marys River, Michigan: An Ecological Profile. 1987
Statement of Concerns and Suggested Ecological Research. 1975
Steady state modeling program : application manual / 1972
Strategic human resource management / 2002
Strategies for accelerating cleanup at toxic waste sites : fast-tracking environmental actions and decision making / 1998
PREV 1 ... 4 5 6 7 8 9 10 11 12 13 14 15 NEXT

Save, Print or Email Selected Records