TY  - GEN
AU  - Watt, Kenneth E.F
TI  - Principles of environmental science
T2  - McGraw-Hill Series in Population Biology
SN  - 0070685754
U1  - 574.5 
PY  - 1973///
CY  - New York
PB  - McGraw-Hill
KW  - LIFE SCIENCE
ER  -