TY  - BOOK
AU  - Cunningham William P
TI  - Understanding our environment: an introduction
SN  - 0697204561 (pbk)
U1  - G:55, N4 
PY  - 1994///
CY  - Dubuque,Iowa Wm C Brown Publishers
KW  -  Ecology
KW  -  Environment biology
KW  - Biology
ER  -