Search Results for the EPA National Library Catalog

Items Found: 749
Showing: Items 201 - 250
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Distribution and Control of Macrophyte Biomass in Lake Wingra. 1971
Distribution of Relative Error of Toxicity of Herbicides and Metals to 'Arabidopsis'. 1992
Distribution of Selected Metals in Bottom Sediments. 1971
Distribution of Submersed Aquatic Vegetation in the Fresh and Oligohaline Tidal Potomac River, 2005. 2008
Distribution, Composition and Biomass of the Crustacean Zooplankton Population in Western Lake Superior. 1973
DNA Concentration as an Estimate of Sludge Biomass. 1971
Draft regulatory impact analysis : changes to renewable fuel standard program / 2009
Draft regulatory impact analysis : RFS annual rules / 2021
Draft regulatory impact analysis : RFS standards for 2023-2025 and other changes / 2022
Dry weight biomass data for four abundant grasshopper species of the Pawnee site / 1969
Early life-stage toxicity of copper to endangered and surrogate fish species / 2001
Ecological Changes in the Southern California Bight Near a Large Sewage Outfall: Benthic Conditions in 1980 and 1983. 1986
Ecological Characterization of Coastal Maine (North and East of Cape Elizabeth). Volume 2. 1980
Ecological effects on tropospheric ozone: a U.S. perspective - past, present and future {microfiche} / by William E. Hogsett and Christian P. Andersen. 1997
Ecological risk assessment for the Middle Snake River, Idaho. 2002
Ecological Studies and Mathematical Modeling of 'Cladophora' in Lake Huron: 3. The Dependence of Growth Rates on Internal Phosphorous Pool Size (Journal Version). 1982
Ecological Studies and Mathematical Modeling of 'Cladophora' in Lake Huron: 5. Model Development and Calibration. 1982
Ecological Studies and Mathematical Modeling of 'Cladophora' in Lake Huron: 7. Model Verification and System Response. 1982
Ecological Study of the Missouri River Prior to Channelization. 1974
Ecosystem Changes in Lakes Erie and Ontario. 1981
Ecosystem Effects of Oyster Restoration in Virgina Habitat and Lease Areas. A Report to the Maryland Department of Natural Resources. 2006
Effect of Added Water and Acidity of Simulated Rain on Growth of Field-Grown Radish. 1982
Effect of Environmental Factors on Phytoplankton Growth: Light and the Interactions of Light with Nitrate Limitation (Journal Version). 1981
Effect of Microbial Concentration on Biodegradation Rates of Phenols. 1989
Effect of P-Cresol on Leaf Decomposition and Invertebrate Colonization in Experimental Outdoor Streams. 1983
Effect of Secondary Effluents on Eutrophication in Las Vegas Bay, Lake Mead, Nevada. 1986
Effect of Silicate Grain Shape, Structure, and Location on the Biomass and Community Structure of Colonizing Marine Microbiota. 1981
Effect of Various Intake Designs on Zooplankton Entrainment. 1983
Effects of a Continuous Low-Level No. 2 Fuel Dispersion on Laboratory-Held Intertidal Colonies. 1977
Effects of Acidity of Simulated Rain and Its Joint Action with Ambient Ozone on Measures of Biomass and Yield in Soybean. 1983
Effects of Agriculture on Stream Fauna in Central Indiana. 1983
Effects of Canopy Modification and Accumulated Sediment on Stream Communities. 1981
Effects of Complex Effluents on Photosynthesis in Lake Erie and Lake Huron. 1988
Effects of Continuous Chlorination on Entrained Estuarine Plankton. 1980
Effects of Different Mixing Schedules on Phytoplankton, Zooplankton and Nutrients in Marine Microcosms. 1981
Effects of forest fertilization with urea on major biological components of small cascade streams, Oregon / 1979
Effects of Microbial Community Interactions on Transformation Rates of Xenobiotic Chemicals. 1984
Effects of Oil and Gas Well-Drilling Fluids on the Biomass and Community Structure of Microbiota that Colonize Sands in Running Seawater. 1982
Effects of Ozone and Soil Water Deficit on Roots and Shoots of Field-Grown Soybeans. 1988
Effects of ozone on nitrogen fixation in ladino clover / 1976
Effects of Ozone on the Regrowth and Energy Reserves of a Ladino Clover-Tall Fescue Pasture. 1988
Effects of phosphorus loading on phytoplankton distribution and certain aspects of cytology in Saginaw Bay, Lake Huron / 1983
Effects of Physical Gradients on the Production Dynamics of Sediment-Associated Algae. 1983
Effects of pollutants on submarine plant synecology / 1977
Effects of Pulp and Paper Mill Effluents on Growth and Production of Fish. Phases I and II. 1972
Effects of sediment holding time on sediment toxicity / 1990
Effects of Soil Moisture on Structural and Biomass Characteristics of Four Salt Marsh Plants. 1987
Effects of Stratospheric Ozone Depletion on Marine Organisms. 1989
Effects of Ultraviolet-B Irradiance in Soybean. 6. Influence of Phosphorus Nutrition on Growth and Flavoniid Content. 1985
Effects of Ultraviolet-B Radiation on Plant Competition in Terrestrial Ecosystems. 1983
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