TY  - BOOK
AU  - Clapham, W. B.
TI  - Human Ecosystems
SN  - 0023225106
U1  - 304.2 
PY  - 1981///
CY  - New York
PB  - Macmillan Publishing Company
KW  - Social sciences
KW  - Sociology
KW  - Human ecology
ER  -