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A test of treated timbers in a mine at Negaunee, Mich.
Treatment of timber
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Published Year
1950-1959 (2) *
Subject
Mine timbering--Preservation (2)
Mine timbering--Testing (2) *
Wood preservatives--Testing (2)
Author
Crawford, F. S. (2)
Bird, J. Howard. (1)
Wirka, R. M. (1)