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Bibliographic Details
Main Authors:	McCaskey, H. D. (Hiram Dryer), 1871- (Author), Burchard, Ernest F. (Ernest Francis), 1875-1961 (Author)
Format:	Government Document eBook
Language:	English
Published:	[Washington, D.C.] : Department of the Interior, United States Geological Survey, 1919.
Series:	Bulletin (Geological Survey (U.S.)) ; no. 666.
Subjects:	Geology, Economic > United States. Mines and mineral resources > United States. Mines and mineral resources. United States.
Online Access:	https://purl.fdlp.gov/GPO/gpo60244

Description
Item Description:	Title from title screen (viewed July 2, 2014).
Physical Description:	1 online resource (278 pages) : illustrations.
Bibliography:	Includes bibliographical references (pages 221-278).