TY  - BOOK
AU  - Detwyler, Thomas R
TI  - Man's impact on environment
SN  - 07-016592-0
U1  - 614.7 21st
PY  - 1971///
CY  - New York
PB  - McGraw-Hill
KW  - Human ecology; Social ecology; Human beings-Effect of environment on
ER  -