Search Results for the EPA National Library Catalog

Items Found: 3
Showing: Items 1 - 3
Your Search: (AUTHOR=Ferris AND V. AND R.)

Select Item Title Year Published
Biota of freshwater ecosystems : identification manual. 1972
Genera of freshwater nematodes (Nematoda) of eastern North America, 1973
Ordination of Aquatic Nematode Communities as Affected by Stream Water Quality. 1979

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