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 /Publisher: Philadelphia, PA : American Society for Testing and Materials,
Date: 1986. This title can be found in 2 Iowa libraries.
Impact of acid rain and deposition on aquatic biological systems /Publisher: Philadelphia, PA : ASTM,
Date: c1986. This title can be found in 2 Iowa libraries.
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 /Publisher: Philadelphia, PA : ASTM,
Date: c1984. This title can be found in 2 Iowa libraries.
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