TY - BOOK AU - Isom,Billy G. ED - ASTM Committee D-19 on Water ED - Symposium on Rationale for Sampling and Interpretation of Ecological Data in the Assessment of Freshwater Ecosystems TI - Rationale for sampling and interpretation of ecological data in the assessment of freshwater ecosystems: a symposium T2 - ASTM special technical publication SN - 0803104553 AV - QH96.8 .B5 R374 PY - 1986/// CY - Philadelphia, Pa. PB - ASTM KW - WATER QUALITY BIOASSAY KW - CONGRESSES KW - ENVIRONMENTAL IMPACT ANALYSIS KW - FRESHWATER ECOLOGY N1 - "ASTM publication code number (PCN) 04-894000-16"; Includes bibliographical references and indexes ER -