Natural gemstones
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey
Published: 1992
Place of publication: Reston, Va.?
Language: eng
Number of pages: 16
Subjects: Precious stones; Collection and preservation; Gems
Notes: Shipping list no.: 92-0528-P.

Includes bibliographical references (pages 13-14, 16).

Also available via Internet from the USGS web site. Address as of 2/3/2003: http://pubs.usgs.gov/gip/gemstones/index.html; current access via PURL.