00634pam a2200193 a 4500 0899085741 (alk. paper) : DLC 363 GRE 1992 A078 Or. Anderson, Bob, Pollution : examining cause and effect relationships / San Diego, CA : Greenhaven Press, c1992. 36 p. : ill. (some col.) ; 29 cm. Presents opposing viewpoints on pollution and its effects on the atmosphere, water, and people of the planet. Pollution Pollution. Critical thinking. Buggey, JoAnne. EK 15845 15845 0 0 0 363_000000000000000_GRE_1992_A078_OR 0 69591 LBA LBA A078 2017-12-13 363 GRE 1992 A078 Or. A11888 2017-12-13 2017-12-13 EK