工程与技术Modern automatic electrically controlled elevators for transporting men at two coal mines in Western PennsylvaniaJ. W Holcomb![Modern automatic electrically controlled elevators for transporting men at two coal mines in Western Pennsylvania]()
Modern automatic electrically controlled elevators for transporting men at two coal mines in Western Pennsylvania
J. W Holcomb
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《Modern automatic electrically controlled elevators for transporting men at two coal mines in Western Pennsylvania》，J. W…
书目信息
- 作者
- J. W Holcomb
- 分类
- 工程与技术
- 语言
- 英语
- 来源
- HathiTrust