TY  - BOOK
ED  - National Wildlife Federation.
TI  - Pollution: problems & solutions 
T2  - Ranger Rick's naturescope
SN  - 0791048829
AV  - TD176 .P657 1999
U1  - 363.73 21
PY  - 1999///
CY  - Philadelphia
PB  - Chelsea House
KW  - Pollution
KW  - Study and teaching (Elementary)
KW  - Activity programs
KW  - Study and teaching
KW  - sears
N1  - Includes bibliographical references (p. 106-108) and index; Science Books & Films (A.A.A.S.); Professional; Follett Library Resources
N2  - Text and activities introduce pollution, its causes and effects, and ways to prevent it
ER  -