TY  - SER
ED  - San Diego Society of Natural History.
ED  - San Diego Natural History Museum.
TI  - Environment West: natural history of the western United States 
SN  - 1046-8641
AV  - QH1 .E5732
U1  - 500 11
PY  - 1989///-
CY  - [San Diego, Calif.
PB  - San Diego Society of Natural History
KW  - Natural history
KW  - West (U.S.)
KW  - Periodicals
N1  - Título de la cubierta
ER  -