TY  - BOOK
AU  - Enger,Eldon D.
TI  - Environmental science: the study of interrelationships 
SN  - 069705134X
AV  - QH541.E5 1992 
PY  - 1992///
CY  - Dubuque, Iowa
PB  - W.C. Brown
KW  - Ecology
KW  - Environmental sciences
N1  - Includes bibliographical references
ER  -