California gem trails
Subtitle: a field guide for the collector of California's gems and minerals, authentic, authoritative, and written by one who has been there recently.  Contains the more important locations in the state.  Lots of new localities and up to the minute dataon collecting.
Edition: 3d ed., completely revised.
Publisher: J.D. Simpson & Co.
Published: 1957
Place of publication: Spokane, Wash
Language: eng
Number of pages: 101
Subjects: Precious stones; Mines and mineral resources -- California