TY  - BOOK
AU  - Enger,Eldon D.
TI  - Environmental science: the study of interrelationships 
SN  - 069705103X (pbk.)
PY  - 1986///
CY  - Dubuque, Iowa
PB  - W.C. Brown
KW  - Ecology
KW  - Environmental sciences
N1  - Includes index; Includes bibliographies
ER  -