Soil survey of Contra Costa County. California
By: [by Lawrence E. Welch] ; United States Department of Agriculture, Soil Conservation Service, in cooperation with University of California Agricultural Experiment Station.
Contributors: United States. Soil Conservation Service.; California Agricultural Experiment Station.
Publisher: U.S. Govt. Print. Off.
Published: 1977
Place of publication: [Washington
Language: eng
Number of pages: 122
Subjects: Soils -- California -- Contra Costa County -- Maps.; Soil surveys -- California -- Contra Costa County.
Notes: Bibliography: p. 121.
Cover title.