Search Results for the EPA National Library Catalog

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Select Item Title Year Published
Ecological assessment of macrophyton collection, use, and meaning of data : a symposium sponsored by ASTM Committee D-19 on Water, Fort Lauderdale, FL, 15-16 Jan., 1983 / 1984
Impact of acid rain and deposition on aquatic biological systems / 1986
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 / 1986

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