Potential impacts of low PH on fish and fish populations - Washington, D.C. : United States Government Printing Office, 1980 - 28 p. ; 26 cm. - Biological Service Program ; EWS/OBS-80/40.2 Air popullution and acid rain ; rep.no.2 . Subjects--Topical Terms: Fish liceFish population Dewey Class. No.: 595.36