Year: | 1965 |
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Document Type: | N/A |
Issuing Agency: | United States. Bureau of Mines. |
SUDOC: | I 28.3 |
Series: | United States Bureau of Mines Reports |
Report Number: | Bulletin 630 |
Subjects: | Mineral industries -- United States -- Periodicals. |
Mines and mineral resources -- United States -- Periodicals. | |
Link: | http://digital.library.unt.edu/ark:/67531/metadc12786/ |