Pollution and freshwater fish / by Richard Lloyd. Lloyd, R. (Richard), 1930- Fishes Effect of water pollution on. Freshwater fishes. SH174 .L58 1992 597 20 LLP Includes bibliographical references (p. 170-172) and index. Cambridge : Fishing News Books , c1992 . c1992 . 1992 Text xvi, 176 p. : eng