Department of the Interior, United States Geological Survey, in cooperation with the California Department of Water Resources and other state, municipal, and federal agencies
Leaflet (University of California (System). Division of Agricultural Sciences) Leaflet (University of California (System). Division of Agriculture and Natural Resources)
Bulletin (University of California (System). Division of Agriculture and Natural Resources) Bulletin (University of California (System). Division of Agricultural Sciences)
Author
Division of Agriculture and Natural Resources, University of California