Mine-timber preservation by the collar method :progress report 1

Author: Roberts, Edward.
Year: 1953
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:4980
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 4980
Subject: Mine timbering
Link: https://hdl.handle.net/2027/mdp.39015078478305

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