Search Results for the EPA National Library Catalog

Items Found: 388
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Biological surveys and biological monitoring in fresh water 1974
Biology and Chemistry of Surface Freshwater Microlayers. 1972
Biology of fresh waters 1978
Biology of water pollution : a collection of selected papers on stream pollution, waste water, and water treatment / 1967
Biota of Freshwater Ecosystems. Identification Manual No. 2. The Genus 'Argulus' (Crustacea: Branchiura) of the United States. 1972
Biota of Freshwater Ecosystems. Identification Manual No. 3. Freshwater Sphaeriacean Clams (Mollusca: Pelecypoda) of North America. 1972
Biota of Freshwater Ecosystems. Identification Manual No. 4. Freshwater Polychaetes (Annelida) of North America. 1972
Biota of Freshwater Ecosystems. Identification Manual No. 5. The Freshwater Amphipod Crustaceans (Gammaridae) of North America. 1972
Biota of Freshwater Ecosystems. Identification Manual No. 6. Aquatic Dryopoid Beetles (Coleoptera) of the United States. 1972
Biota of Freshwater Ecosystems. Identification Manual No. 7. Freshwater Isopods (Asellidae) of North America. 1972
Brush Lake, McLean County, North Dakota. 1976
Changes in Water Environment Resulting from Aquatic Plant Control. 1970
Chena River, The Study of a Subarctic Stream. 1970
Chlorinated benzenes : ambient water quality criteria / 1978
Chlorinated ethanes : ambient water quality criteria. 1979
Chlorinated phenols : ambient water quality criteria. 1978
Chloroalkyl ethers : ambient water quality criteria. 1979
Chromium : ambient water quality criteria. 1979
Comparative Kinetic Studies of Nitrate-Limited Growth and Nitrate Uptake in Phytoplankton in Continuous Culture. 1981
Comparative Study of Standing Crops and of Phosphorus and Nitrogen Contents of Four Macrophyte Stream Communities. 1971
Comparison of Energy Flow Parameters of Midge Populations in Biological Oxidation Ponds (Effect of Phenol on Oxygen Uptake Rate of a Laboratory Population of Chironomus Attenuatus Walk.) 1,2). 1971
Conjugal Transfer of R68.45 and FP5 between 'Pseudomonas aeruginosa' Strains in a Freshwater Environment. 1988
Copper : ambient water quality criteria. 1978
Correlation of Structure Versus Activity of Pollutants of Fresh Water. 1971
Crayfishes (Astacidae) of North and Middle America / 1972
Cretaceous Ponds, a Unique Area on Staten Island, New York. 1976
Cyanides : ambient water quality criteria. 1978
Dale Hollow Reservoir, Clinton and Cumberland Counties, Kentucky and Clay, Overton, and Pickett Counties, Tennessee. 1977
Deerfield Lake, Pennington County, South Dakota. 1977
Degradation of Riparian Leaves and the Recycling of Nutrients in a Stream Ecosystem. 1972
Descriptive water quality for the Atchafalaya Basin, Louisiana / 1980
Diatom Populations Changes in Lake George (NY). 1972
Dichlorobenzidine : ambient water quality criteria. 1978
Dichloropropanes/dichloropropenes : ambient water quality criteria / 1978
Dinitrotoluene : ambient water quality criteria. 1979
Diphenylhydrazine : ambient water quality criteria. 1978
Disinfection of wastewater : task force report. 1976
Distribution and Biotic Effects of Nutrients in Flathead Lake, Montana. 1975
Distribution of phytoplankton in Illinois lakes / 1978
Distribution of phytoplankton in Mississippi lakes / 1977
Distribution of phytoplankton in South Carolina lakes / 1977
Distribution of Selected Metals in Bottom Sediments. 1971
Distributional ecology and behavioral thermo-regulation of fishes in relation to heated effluent from a steam-electric power plant (Lake Monona Wisconsin) / 1972
Diverse: A Fortran IV Program to Calculate Diversity Indices of Stream Bottom Organisms. 1971
Dynamics of the Nitrogen Cycle in Lakes. 1970
Ecologic Impact of the Interactions Among Microorganisms and Aquatic Contaminents in Lake Erie, Phase I and Phase II. 1971
Ecological Monitoring of Stream Systems. 1973
Ecological Studies of the Surface Waters of the Whitewater Creek Watershed, Walworth, Rock and Jefferson Counties, Wisconsin. 1973
Ecological Study of the Missouri River Prior to Channelization. 1974
Ecology of inland waters and estuaries. 1961
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