TY  - BOOK
AU  - Turk,Amos
TI  - Ecology, pollution, environment
T2  - Saunders golden series 
SN  - 0721691388
AV  - TD174 .T87 1972
PY  - 1972///
CY  - Philadelphia,
PB  - Saunders
KW  - Pollution.
KW  - Ecology.
KW  - Population.
N1  - Includes bibliographies
ER  -