Progress in metal mine ventilation
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Publication
1929 - The Department., (Washington, District of Columbia
Language
English
Word Count
4,500 words, Guess
Page Count
18 pages
Identifiers
- Open LibraryOL59668778M
- OCLC Control Number41077750
- OCLC Control Number230980177
Subjects
Series Statement
- U. S. Department of Commerce. Bureau of Mines. Circular -- 6136
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