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United States Environmental Protection Agency
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Search Results for the EPA National Library Catalog
Items Found: 953
Showing: Items 701 - 750
Your Search: (SUBJECT=FRESHWATER.)
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Proceedings of the 1991 Midwest Pollution Control Biologists meeting : environmental indicators : measurement and assessment endpoints /
Proceedings of the National Symposium on Freshwater Inflow to Estuaries /
Productivity study of the Roanoke River above Niagra Dam in Virginia
Proposed methodology for specifying atrazine levels of concern for protection of plant communities in freshwater ecosystems /
Proposed technical basis for establishing sediment quality criteria for nonionic organic chemicals using equilibrium partitioning /
Publications and reports : in-house and extramural research, Coastal Pollution Branch, through October 31, 1976 /
Publications and reports : Marine and Freshwater Ecology Branch
Quantitative baseline inventory of the aquatic macroinvertebrate and periphyton communities of the South Platte and Saint Vrain Rivers, Fort Saint Vrain Nuclear Generating Statio
Range-wide assessment of habitat suitability for Roanoke logperch (Percina rex) /
Rapid bioassessment protocols for use in wadeable streams and rivers : periphyton, benthic macroinvertebrates and fish /
Rare and endangered fish of Illinois
Rationale for sampling and interpretation of ecological data in the assessment of freshwater ecosystems : a symposium sponsored by ASTM Committee D-19 on Water, Philadelphia, PA, 31 Oct.-1 Nov. 1983 /
Reaction Mass of Diethylene Glycol Dibenzoate and Dipropylene Glycol Dibenzoate.
Reconnaissance investigation of water quality, bottom sediment, and biota associated with irrigation drainage in and near Stillwater Wildlife Management Area, Churchill County, Nevada, 1986-87 /
Reconnaissance investigation of water quality, bottom sediment, and biota associated with irrigation drainage in the Columbia Basin Project, Washington, 1991-92
Recovery Implementation Program for Endangered Fish Species in the Upper Colorado River Basin, Final
Recovery Implementation Program for Endangered Fish Species in the Upper Colorado River Basin, Final Environmental Assessment
Redear sunfish in Florida
Reductive Dechlorination of Dichlorophenols in Anaerobic Pond Sediments (Chapter 13).
Reference reach fish community report.
References for the identification of freshwater macroinvertebrates /
Regiospecific Dechlorination of Pentachlorophenol by Dichlorophenol-Adapted Microorganisms in Freshwater, Anaerobic Sediment Slurries.
Relationships between fish and aquatic plants a plan of study /
Report from the Science Advisory Board (SAB) Lookout Panel on freshwater ecosystems.
Report of the Federal Advisory Committee on the Total Maximum Daily Load (TMDL) Program.
Report of the Quality Management Work Group /
Report on the Acute Toxicity of Tk 12 869/a to Rainbow Trout (salmo Gairdneri) with Cover Letter dated 010987.
Report on the ecological assessment of streams in the vicinity of General Electric/Shepherd Farm Superfund site, March 1994.
Report on the impacts of commercial dredging on the fishery of the lower Kansas River
Report on zinc and freshwater fish
Reservoir fisheries and limnology.
Response of phytoplankton to water quality in the Chowan River system
Response of the Spokane River periphyton community to primary sewage effluent and continued investigation of Long Lake : project completion report /
Response of tolerant organisms to specific pollutants
Response of tolerant organisms to specific pollutants /
Results from an Acute Toxicity to Water Fleas (Daphnia Magna) and Results from a 72-hour Growth Inhibition Test using Freshwater Micro Algae Selenastrum Capricornutum (Raphidocellus Subcapitata) with 3-Hydroxy-N-Phenylaniline.
Results from an Aquatic Toxicity Study in the Freshwater Plant, Lemna Gibba with 6-Ethoxy-N-methyl-1, 3-5triazine-2, 4-diamine (Star 1).
Results of a Freshwater Algal Growth Inhibition Test on Desmodesmus Subspicatus with Coco Alkylamines.
Results of a Freshwater Algal Growth Inhibition Test with AgiSyn 740.
Results of a Freshwater Algal Growth Inhibition Test with NeoRad R-449.
Results of a Freshwater Green Algal (Pseudokirchneriella Subcapitata) Test with N-((2-Hydroxy- 5-Nonylphenyl) Methyl)-N-Methylglycine Sodium Salt.
Results of a GLP Acute Toxicity Test with an Experimental Pesticide on the Growth of the Freshwater Diatom (Navicula pelliculosa).
Results of a Growth Inhibition Test on the Freshwater Aquatic Plant Lemna Gibba. (Confidential).
Results of a Local Lymph Node Assay (LLNA) and a Freshwater Alga and Cyanobacteria, Growth Inhibition Test.
Results of a Toxicity Study in Freshwater Algae with a R&D Proprietary Mixture Containing 50% of Methyl 2-(((((4,6-dimethoxy- 2-pyrimidinyl) amino)carbonyl)amino) sulfonyl)-6- (Trifluoromethyl) -3-pyridinecarboxylate Monosodium Salt.
Results of a Toxicity Study in the Freshwater Dipteran Insect Chironomus Riparius and the Aquatic Plant Lemna Gibba.
Results of a Toxicity Study in the Unicellular Freshwater Green Alga (Desmodesmus Subspicatus) with 1H-Benzotriazole-1-methanamine, N,N-bis(2-ethylhexyl)-armethyl-.
Results of Acute Toxicity Studies in Freshwater Green Algae and Fathead Minnows with Pentanoic Acid, Nonafluoro.
Results of an Acute Algae Toxicity Test.
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