Geology of the Johnston Grade area
Subtitle: San Bernardino County, California.
Contributors: California. Division of Mines and Geology.
Series: Special report (California. Division of Mines and Geology) -- 31
Published: 1953
Place of publication: San Francisco
Language: eng
Number of pages: 18
Subjects: Geology -- California -- San Bernardino County.; Petrology -- California -- San Bernardino County.
Other titles: Johnston Grade area, San Bernardino County, California.
Notes: Thesis (M.A.) - University of California at Los Angeles.

Folded map in pocket.

Bibliography: p. 18.