Search Results for the EPA National Library Catalog

Items Found: 13

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Select Item Title Year Published
An illustrated key to the planktonic rotifers of the Laurentian Great Lakes / 1977
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. 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
Freshwater leeches (Annelida: Hirudinea) of North America, 1972
Freshwater planarians (Turbellaria) of North America. 1972
Freshwater unionacean clams (Mollusca: Pelecypoda) of North America, 1973
Genera of freshwater nematodes (Nematoda) of eastern North America, 1973
Guide to Aquatic Smartweeds (Polygonum) of the United States. 1971
Guide to the Common Diatoms at Water Pollution Surveillance System Stations. 1971
Introduction to Arthropods of Public Health Importance. Training Guide. 1960
Picture-Key to the Genera of Aquatic Midges. 1967

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