Author: | O'Harra, B. Marvel |
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Year: | 1924 |
Document Type: | N/A |
SUDOC: | I 28.23:2575 |
Series: | Report of investigations (United States. Bureau of Mines) |
Report Number: | Report 2575 |
Subjects: | Lignite |
Char | |
Zinc ores -- Metallurgy | |
Link: | https://digital.library.unt.edu/ark:/67531/metadc1393304/ |