Search Results for the EPA National Library Catalog

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Plankton Associations and Related Factors in a Hipereutrophic Lake. 1971
Plasmid Expression and Maintenance during Long-Term Starvation-Survival of Bacteria in Well Water. 1989
Prediction of Substrate Removal Rates of Attached Microorganisms and of Relative Contributions of Attached and Suspended Communities at Field Sites. 1988
Principles of Toxicity Testing with Marine Unicellular Algae. 1988
Proceedings of the first and second USA-USSR symposia on the effects of pollutants upon aquatic ecosystems. 1978
Proceedings of the National Response Team Oil Spill Scientific Response Workshop, New England. {microform}. 1978
Proceedings of the Symposium on the Recovery of Indicator Organisms Employing Membrane Filters / 1977
Proceedings of the Workshop : Microbial Degradation of Pollutants in Marine Environments, Pensacola Beach, Florida, 9-14 April 1978 / 1979
Proceedings of the Workshop--Microbial Degradation of Pollutants in Marine Environments, Pensacola Beach, Florida, 9-14 April 1978 / 1979
Production cycles in aquatic microcosms / 1977
Production of Extracellular Nucleic Acids by Genetically Altered Bacteria in Aquatic-Environment Microcosms. 1989
Progress and Possibilities in Sewage Treatment Research. 1938
Project HYPO. An Intensive Study of the Lake Erie Central Basin Hypolimnion and Related Surface Water Phenomena. 1972
Protecting our drinking water from microbes / 1989
Reductive dechlorination of dichlorophenols in anaerobic pond sediments / 1990
Relationships of Hg(II) Volatilization from a Freshwater Pond to the Abundance of 'mer' Genes in the Gene Pool of the Indigenous Microbial Community. 1991
Report on Interstate Pollution of the Missouri River Yankton, South Dakota, to Omaha, Nebraska. 1958
Report on the Public Health Aspects of Clamming in Raritan Bay. 1941
Results of Ocean Diffusion and Biological Studies of the Hollywood, Florida, Ocean Outfall / 1976
Role of Na(+) in Transport of Hg(2+) and Induction of the Tn21 mer Operon. 1994
Role of sublethal injury in decline of bacterial populations in lake water / 1988
Sampling Regimes and Bacteriological Tests for Coliform Detection in Groundwater. 1987
Seasonal Effects on Microbial Transformation Rates of an Herbicide in a Freshwater Stream: Application of Laboratory Data to a Field Site. 1986
Selected Biological References Applicable to Water Treatment. 1952
Selection of Surrogates for a Genetically Engineered Microorganism with Cellulolytic Capability for Ecological Studies in Streams. 1991
Seminar publication : control of biofilm growth in drinking water distribution systems. 1992
Shake-Flask Test for Estimation of Biodegradability of Toxic Organic Substances in the Aquatic Environment. 1987
Short-Term Chronic Toxicity Test Using 'Daphnia magna'. 1987
Significance of Cellulose Production by Planktonic Algae in Lacustrine Environments. 1972
Significance of the Coliform Group of Bacteria and of Other Bacteria as a Criterion of the Sanitary Quality of Water. 1945
Similarities of Periphyton Communities on Natural and Artificial Substrates in Streams. 1971
Sinclair and Dyes Inlets action program initial data summaries and problem identification / 1988
Sorption and Toxicity of Azo and Triphenylmethane Dyes to Aquatic Microbial Populations. 1985
Specificity of Cellular DNA-Binding Sites of Microbial Populations in a Florida Reservoir. 1989
Stable Carbon Isotope Analysis of Nucleic Acids to Trace Sources of Dissolved Substrates Used by Estuarine Bacteria. 1990
State of the art: 1603 - biological identification - microbiological pollution indicators / 1968
Statement of Concerns and Suggested Ecological Research. 1975
Status of Waterborne Giardiasis Outbreaks and Monitoring Methods. 1986
Studies of the Interactions of Aquatic Bacteria and Aquatic Nematodes. 1970
Sulfide to Sulfate Reaction Mechanism. A Study of the Sulfide to Sulfate Reaction Mechanism as it Related to the Formation of Acid Mine Waters. 1970
Summary of a Water Quality Survey, Greeley, Colorado. November 16-19, 1971. 1971
Summary: Evaluation of the Wyoming Water Supply Program. 1972
Survival of Escherichia coli in oligotrophic waters : project completion report / 1974
Survival of, and Genetic Transfer by, Genetically Engineered Bacteria in Natural Environments. 1986
Susceptibility of Chemostat-Grown 'Yersinia enterocolitica' and 'Klebsiella pneumoniae' to Chlorine Dioxide. 1985
Symposium on Research Related to Water Pollution in the Northwest (3rd). 1958
Testacea (Protozoa: Sarcodina) as Indicators of Water Quality in Western Montana. 1974
The Aquatic environment: microbial transformations and water management implications; 1974
The common phytoplankton genera from eastern and southeastern lakes / 1979
The effect of chlorination on selected organic chemicals / 1972
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