TY  - BOOK
AU  - Detwyler, Thomas R.
TI  - MAN'S IMPACT ON ENVIRONMENT
U1  - 301.3 
PY  - 1971///
CY  - New York
PB  - Mcgraw-Hill
KW  - Human Ecology
KW  - Pollution
KW  - Man-Influence On Nature
ER  -