Design optimization in underground coal systems : final technical report as of February 28, 1981 /
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| 企业作者: | , |
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| 格式: | 图书 |
| 语言: | English |
| 出版: |
[Washington?] :
U.S. Dept. of Energy, Assistant Secretary for Energy Technology, Division of Fossil Fuel Extraction, Mining Research and Development,
1981.
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| 主题: |