Coal transportation practices and equipment requirement to 1985 /
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| Corporate Author: | |
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| Format: | Government Document Book |
| Language: | English |
| Series: | Information circular (United States. Bureau of Mines) ;
8706. |
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| Physical Description: | 2 unnumbered pages, iv, 90 pages : illustrations ; 26 cm. |
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| Bibliography: | Bibliography: pages 54-57. |