TY  - BOOK
AU  - ENGER,ELDON D.
AU  - SMITH,BRODLEY
TI  - ENVIRONMENTAL SCIENCE : A STUDY OF INTERRELATION SHIPS / 
U1  - 363.7 
PY  - 1995///
CY  - [S.N] : 
PB  - WM . C. BROWN ، 
KW  - ECOLOGY
KW  - ENVIRONMENT OF PRATECTION
KW  - HUMAN ECOLOGY
ER  -