00487nam a22001457a 4500 10189 10189 577.27 H993 1971 Hyde, Margaret O. 23282 For pollution fighters only / Margaret O. Hyde ; illustrated by Don Lynch. New York : McGraw-Hill Book Company, c1971. 157 p. : some ill. ; 22 cm. Includes bibliographical references and index. Pollution Ecology 23283 Lynch, Don. 23284 BK 0 0 0 0 NFIC HS-IMC HS-IMC CIR 0000-00-00 Purchased 577.27 H993 1971 12984 2019-11-06 00:00:00 2019-11-06 CIR