Concentration of copper ores in North America
By: by Thomas G. Chapman.
Series: Bulletin (United States. Bureau of Mines) ;; 392
Publisher: U.S. G.P.O.
Published: 1936
Place of publication: Washington
Language: eng
Number of pages: 169
Subjects: Copper ores -- North America.
Notes: Includes bibliographical references and index.
At head of title: United States Dept. of the Interior. Harold L. Ickes, secretary. Bureau of Mines. John W. Finch, director.