Soil survey of the Ukiah area, California /

"Advance sheets--field operations of the Bureau of Soils, 1914."

Soil survey of the San Luis Obispo area, California /

Cover title.

Soil survey of the Santa Cruz area, California /

Bibliography: p. 90.

Soil survey of the Shasta Valley area, California /

Done jointly by the Bureau of Soils and the University of California Agricultural Experiment Station.

Soil survey of the Suisun area, California /

United States Department of Agriculture, Bureau of Chemistry and Soils in cooperatio with the University of California Agricultural Experiment Station.

Soil survey of the Wasco area, California /

Caption title: Soil survey of the Wasco area, California.

Soil survey of the Willits area, California /

"Advance sheets--Field Operations of the Bureau of Soils, 1918."

Soil survey of the Napa area, California /

In cooperation with the University of California Agricultural Experiment Station."

Soil survey of the Clear Lake area, California.

In cooperation with the University of California Agricultural Experiment Station.