Engineering & TechnologyModern 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” by J. W Holcomb: a public-domain book in…
Catalogue details
- Author
- J. W Holcomb
- Category
- Engineering & Technology
- Language
- English
- Source
- HathiTrust