Gem stones of the United States
By: by Dorothy M. Schlegel.
Series: Contributions to economic geology; Geological Survey bulletin -- 1042-G
Publisher: U.S. G.P.O.
Published: 1957
Place of publication: Washington
Language: eng
Number of pages: 253
Subjects: Precious stones -- United States.
Notes: Issued in a case.

Bibliography: p. 252-253.