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United States Environmental Protection Agency
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Search Results for the EPA National Library Catalog
Items Found: 437
Showing: Items 401 - 437
Your Search: (SUBJECT=Food chains)
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The wolf's tooth : keystone predators, trophic cascades, and biodiversity /
Theoretical Basis for Modeling Element Cycling.
Three multimedia models used at hazardous and radioactive waste sites /
Tidal flats in estuarine water quality analysis /
Tissue burdens of selected radionuclides in beef cattle on and around the Nevada Test Site /
Total Human Exposure: Basic Concepts, EPA Field Studies, and Future Research Needs.
Toxic chemicals and human food chains : a selected bibliography /
Toxic Effects of Cadmium on the Garden Snail ('Helix aspersa').
Toxic Residues and Pollutants.
Toxicity Assessment of Dredged Materials: Acute and Chronic Toxicity as Determined by Bioassays and Bioaccumulation Tests. Proceedings of the International Seminar on the Environmental Aspects of Dredging Activities (Actes du Seminaire International sur les Aspects Environnementaux lies aux Activities de Dragages).
Toxicity in the aquatic environment; proceedings,
Toxicity of DDT food and water exposure to fathead minnows /
Toxicity to Fathead Minnows of Endrin in Food and Water.
Transient Phase between Growth and Nongrowth of Heterotrophic Bacteria, with Emphasis on the Marine Environment.
Transport and Transformation of Contaminants Near the Sediment-Water Interface. Chapter 1. Introduction.
Transport of Contaminants in the Great Lakes.
Tritium retention by cows and steers and transfer to milk /
Trophic Level Interrelationships in Cayuga Lake, New York.
Trophic organization in coastal systems
Trophic structure modifications by planktivorous fish in aquatic microcosms /
Uptake of Cerium-144, Promethium-147, and Plutonium-238 by Oat Plants from Soils.
Uptake of Planar Polychlorinated Biphenyls and 2,3,7,8-Substituted Polychlorinated Dibenzofurans and Dibenzo-p-dioxins by Birds Nesting in the Lower Fox River and Green Bay, Wisconsin, USA.
Use of Periphyton in the Development of Biocriteria.
Use of Pesticides in Suburban Homes and Gardens and Their Impact on the Aquatic Environment.
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 /
Use of the mixed flask culture (MFC) microcosm protocol to estimate the survival and effects of microorganisms added to freshwater ecosystems /
UTAB Users Manual. Microcomputer Version. First Edition, 1991.
Validation strategy for the integrated exposure uptake biokinetic model for lead in children /
Variable Selectivity and the Role of Nutritional Quality in Food Selection by a Planktonic Rotifer.
WASTOX (Water Quality Analysis Simulation for Toxics), a Framework for Modeling the Fate of Toxic Chemicals in Aquatic Environments. Part 2. Food Chain.
WASTOX : a framework for modeling the fate of toxic chemicals in aquatic environments Food chain /
WASTOX : a framework for modeling the fate of toxic chemicals in aquatic environments. Part 2, Food chain /
Water quality assessment of proposed effluent guidelines for the pulp, paper, and paperboard industry.
Watershed Planning in the Albemarle-Pamlico Estuarine System. Report 3. Toxics Analysis.
What are the Effects of UV-B Radiation on Marine Organisms.
Working conceptual model for the food web of the San Francisco Bay/Delta Estuary : an essay /
Workshop on effects of sewage sludge quality and soil properties on plant uptake of sludge-applied trace constituents - proceedings
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