TY - BOOK AU - Ravera,O. ED - Commission of the European Communities. TI - Biological aspects of freshwater pollution : : proceedings of the c ourse held at the Joint Research Centre of the Commission of the Europe an Communities. Ispra, Italy, 5-9 June 1978 / SN - 0080234429 U1 - 574.52632 RAV PY - 1979/// CY - Oxford ; , New York : PB - Published for the Commission of the Europe an Communities by Pergamon Press, KW - Water KW - Pollution KW - Environmental aspects KW - Congresses KW - Aquatic animals KW - Effect of water pollution on KW - vCongresses KW - Freshwater ecology N1 - "ISPRA Courses."; Includes bibliographical references ER -