TY  - BOOK
AU  - Ehrenfeld,David W.
TI  - Conserving life on earth
U1  - 799 
PY  - 1972///
CY  - New York
PB  - The University Press
KW  - Nature conservation
KW  - Wildlife protection
KW  - Wildlife conservation
KW  - Protected areas
N1  - Includes index
ER  -