Author: | Ruppert, John A. |
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Year: | 1952 |
Document Type: | BMRA |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.23:4847 |
Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
Report Number: | 4847 |
Subject: | Manganese ore |
Link: | https://hdl.handle.net/2027/mdp.39015078493239 |