Investigation of low-grade and complex ores in Colorado [microform]

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Bibliographic Details
Corporate Author: United States. Bureau of Mines
Format: Government Document Microfilm Book
Language:English
Published: [Place of publication not identified] : [publisher not identified], 1921.
Series:Report of investigations (United States. Bureau of Mines) ; 2206.
Subjects:

MARC

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500 |a Record is based on bibliographic data in CIS Index to U.S. Executive Branch Documents, 1910-1932. Reuse except for individual research requires license from LexisNexis Academic & Library Solutions. 
500 |a [on survey of mineral deposits] 
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