Search Results for the EPA National Library Catalog

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Select Item	Title	Year Published
1	An illustrated key to the planktonic rotifers of the Laurentian Great Lakes /	1977
2	Biota of Freshwater Ecosystems. Identification Manual No. 2. The Genus 'Argulus' (Crustacea: Branchiura) of the United States.	1972
3	Biota of Freshwater Ecosystems. Identification Manual No. 4. Freshwater Polychaetes (Annelida) of North America.	1972
4	Biota of Freshwater Ecosystems. Identification Manual No. 5. The Freshwater Amphipod Crustaceans (Gammaridae) of North America.	1972
5	Biota of Freshwater Ecosystems. Identification Manual No. 6. Aquatic Dryopoid Beetles (Coleoptera) of the United States.	1972
6	Freshwater leeches (Annelida: Hirudinea) of North America /	1972
7	Freshwater planarians (Turbellaria) of North America.	1972
8	Freshwater unionacean clams (Mollusca: Pelecypoda) of North America,	1973
9	Genera of freshwater nematodes (Nematoda) of eastern North America /	1973
10	Guide to Aquatic Smartweeds (Polygonum) of the United States.	1971
11	Guide to the Common Diatoms at Water Pollution Surveillance System Stations.	1971
12	Introduction to Arthropods of Public Health Importance. Training Guide.	1960
13	Picture-Key to the Genera of Aquatic Midges.	1967

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