TY  - GEN
AU  - Turk, Jonathan.
TI  - Introduction to environmental studies
SN  - 0030297990
AV  - QH541 
PY  - 1989///
CY  - Philadelphia
PB  - Saunders College Pub., 
KW  - Pollution
KW  - Environmental aspects
KW  - Ecology
N1  - Includes bibliographies and index
ER  -