Search Results for the EPA National Library Catalog

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Showing: Items 4601 - 4650
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Select Item Title Year Published
Trophic equilibrium of Lake Washington / 1977
Trophic State of Lakes and Reservoirs. 1980
Trophic State of Lakes in North Central Florida. 1971
Trophic structure modifications by planktivorous fish in aquatic microcosms / 1977
Tropospheric nitrogen : the influence of anthropogenic sources on distributions and deposition / 1991
Tropospheric nitrogen : the influence of anthropogenic sources on distributions and deposition : project summary / 1992
Typical costs for electric energy generation and environmental controls / 1979
U.S. and Canadian emissions inventory : 1985 / 1988
U.S. Coal Use: The Environmental Challenge. 1988
U.S. Forests and Atmospheric Deposition. 1988
U.S. standards for air sampling of environmental contaminants : current basis and future options / 1991
U.S.--Canada Memorandum of Intent on Transboundary Air Pollution. Impact Assessment. 1981
U.S./German LIMB technology transfer : project summary / 1988
UAF Radiorespirometric Protocol for Assessing Hydrocarbon Mineralization Potential in Environmental Samples. 1992
Ultimate disposal of beef feedlot wastes onto land / 1978
Uncertainties in Nitrogen Mass Loadings in Coastal Watersheds. 1990
United States - Canada Memorandum of Intent on Transboundary Air Pollution. Emissions, Costs and Engineering Assessment, Interim Report, Work Group 3B. 1981
United States - Canada Transboundary Air Pollution Work Group 3A Interim Report on Strategies and Implementation. 1981
United States and Canada: Air Quality Agreement, Progress Report, 2004. 2004
United States Great Lakes Tributary Loadings. 1978
University of California, Riverside Environmental Chamber Data Base for Evaluating Oxident Mechanisms: Indoor Chamber Experiments through 1993. Volume 1. Backing Document and Data Base Description. 1996
University of California, Riverside Environmental Chamber Data Base for Evaluating Oxident Mechanisms: Indoor Chamber Experiments through 1993. Volume 2. Appendices. 1996
Upper Yellowstone River, Montana: Macroinvertebrate Distribution and Water Analysis 1973-1974. 1981
Uptake of Bromacil by Isolated Barley Roots. 1984
Urban Air Pollution Problems. Briefing Document for the President's Air Quality Advisory Board. 1973
Urban Air Shed Photochemical Simulation Model Study. Volume I. Development and Evaluation. 1973
Urban Air Shed Photochemical Simulation Model Study. Volume I. Development and Evaluation. Appendix A. Contaminant Emissions Model and Inventory for Los Angeles. 1973
Urban Air Shed Photochemical Simulation Model Study. Volume I. Development and Evaluation. Appendix B. Generalized Mechanism for Describing Atmospheric Photochemical Reactions. 1973
Urban airshed model : study of five cities. 1990
Urban airshed model study of five cities : low-cost application of the model to future-year SIP control and alternative fuel strategies for Dallas-Fort Worth, Atlanta, Philadelphia, and St. Louis / 1990
Urban airshed model study of five cities : summary report / 1990
Urban airshed model study of five cities Volume 7 Low cost application of the model to future-year SIP control and alternative fuel strategies for Dallas-Fort Worth, Atlanta, Phileadelphia, and St. Louis {microfiche} / by Ralph E. Morris and Thomas C. Meyers, et al... 1990
Urban runoff treatment methods / 1977
Urgent Call to Action: Report of the State-EPA Nutrient Innovations Task Group. 2009
Use Of A Field Drain And An Artificial Wetland To Minimize Ground-Water Contamination From An Agricultural Site. 1998
Use of Advanced Water Resources Planning Techniques in the Development of Regional Water Quality Management Programs. 1972
Use of Artificial Wetlands to Remove Nitrogen from Wastewater. 1984
Use of Automatic Differentiation for Sensitivity Analysis in Emission Control Process. 1995
Use of data from "development of emission rates for the MOVES model," Sierra Research, March 3, 2010 / 2012
Use of Green-Manure Amendments and Tillage to Improve Minesoil Productivity. 1979
Use of meteorological data in air quality trend analysis / 1978
Use of Periphyton in the Development of Biocriteria. 1994
Use of Short-Term Genotoxic Bioassays in the Evaluation of Unregulated Automobile Emissions. 1984
Use of sorbents to reduce S02 emmissions from pulverized-coal flames under low-NOx conditions (progress report) / 1983
Use of Sorbents to Reduce SO2 Emissions from Pulverized Coal Flames under Low-NOx Conditions. 1982
Use of stable carbon and nitrogen isotopes to trace the larval striped bass food chain in the Sacramento-San Joaquin Estuary, California, April to September 1985 / 1989
Use of Water Hyacinth Aquatic Treatment Systems for Ammonia Control and Effluent Polishing. 1984
User manual and technical issues of GREET for MOVES integration / 2005
User manual for two-dimensional multi-class phytoplankton model with internal nutrient pool kinetics / 1986
User's Guide for Executing OZIPR. 1991
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