Colorado gem trails and mineral guide
By: [by] Richard M. Pearl. Sketch maps by Mignon Wardell Pearl.
Edition: 3d, rev. ed.
Publisher: Sage Books
Published: 1972
Place of publication: Chicago
Language: eng
Number of pages: 222
Subjects: Minerals -- Collection and preservation -- Colorado.; Precious stones -- Collection and preservation -- Colorado.
Notes: Includes bibliographical references.