工程与技术Modified longwall mining with a German coal planer. Progress report 2, Completion of mining in three adjacent panels in the Pocahontas no. 4Wilbur A Haley![Modified longwall mining with a German coal planer. Progress report 2, Completion of mining in three adjacent panels in the Pocahontas no. 4]()
Modified longwall mining with a German coal planer. Progress report 2, Completion of mining in three adjacent panels in the Pocahontas no. 4
Wilbur A Haley
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《Modified longwall mining with a German coal planer. Progress report 2, Completion of mining in three adjacent panels in the Pocahontas no. 4》，Wilbur A…
书目信息
- 作者
- Wilbur A Haley
- 分类
- 工程与技术
- 语言
- 英语
- 来源
- HathiTrust