Our mineral supplies. Manganese / by D.F. Hewett.
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| Main Author: | |
| Corporate Author: | |
| Other title: | Manganese. |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
G.P.O.,
1917.
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| Series: | Bulletin (Geological Survey (U.S.)) ;
no. 666-C. |
| Subjects: |