TY  - BOOK
AU  - Enger, Eldon D.
AU  - Smithy, Bradley.
TI  - Environmental science : A study of Interrelationships 
SN  - 069709880x
U1  - 363.7 
PY  - 1991///
CY  - Michigan
PB  - Wm. C. Brown  publisher5s
N1  - include indexand References
ER  -