- Physical Description: 1 online resource (v, 24 pages) : illustrations.
- Publisher: Washington : United States Department of the Interior, Geological Survey, 1975.
Title from title screen (viewed October 2, 2014).
|Bibliography, etc. Note:||
Includes bibliographical references (pages 23-24).
Search for related items by subject
|Subject:||Mines and mineral resources > United States.