TY  - BOOK
AU  - Frayer,W.E.
AU  - Peters,Dennis D.
AU  - Pywell, H. Ross
ED  - U.S. Fish and Wildlife Service
TI  - Wetlands of the California Central Valley: status and trends 1939 to mid-1980's 
PY  - 1989///
CY  - Portland, Oregon
PB  - U.S. Fish and Wildlife Service
KW  - Wetland plants
KW  - California
KW  - Wetlands
KW  - Wetland conservation
ER  -