The use of rock bolts in the support of mine openings
Main Author: | |
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Language: | en_US |
Published: |
The University of Arizona.
1962
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Subjects: | |
Online Access: | http://hdl.handle.net/10150/551567 |
Main Author: | |
---|---|
Language: | en_US |
Published: |
The University of Arizona.
1962
|
Subjects: | |
Online Access: | http://hdl.handle.net/10150/551567 |