00000cam a22000004a 4500 UP-1685523046124967821 Buklod 20230503092606.0 m o j ta 071031s xx d r |||| u| 0070549710 (iLib)UPMNL-00000006464 UP CPH rda eng TD153 S39 1978 Sawyer, Clair N. Chemistry for environmental engineering Clair N. Sawyer, Perry L. McCarty. New York McGraw-Hill c1978 x, 523 p. ill. 25 cm. Includes bibliographical references and index. Environmental chemistry. Sanitary engineering. McCarty, Perry L. IPH-10459 UPMNL CPH TD153 S39 1978 Book