Coal exploration proceedings of the first International Coal Exploration Symposium, London, England, May 18-21, 1976
| 其他作者: | , |
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| 格式: | 图书 |
| 语言: | English |
| 出版: |
San Francisco
M. Freeman Publications
c1976-c1979.
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| 丛编: | World coal book.
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| 主题: |