Materials survey
Subtitle: cobalt, 1950.
By: Compiled for the Materials Office, National Security Resources Board, by the U.S. Dept. of the Interior, Bureau of Mines, with the cooperation of the Geological Survey.
Contributors: United States. National Security Resources Board. Materials Office.
Publisher: U.S. Govt. Print. Off.]
Published: 1952
Place of publication: [Washington
Language: eng
Subjects: Cobalt mines and mining -- United States.
Notes: Includes bibliographies.
"Errata" leaf inserted.