Engineering & TechnologyCoal-mine timbering; technical information for use in vocational classesRobert Zerubabel Virgin![Coal-mine timbering; technical information for use in vocational classes]()
Coal-mine timbering; technical information for use in vocational classes
Robert Zerubabel Virgin
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“Coal-mine timbering; technical information for use in vocational classes” by Robert Zerubabel Virgin: a public-domain book in “Engineering & Technology”…
Catalogue details
- Author
- Robert Zerubabel Virgin
- Category
- Engineering & Technology
- Language
- English
- Source
- HathiTrust