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A test of treated timbers in a mine at Negaunee, Mich.

Published Year

• 1950-1959 (1)

Subject

• Mine timbering--Preservation (1)
• Mine timbering--Testing (1) *
• Wood preservatives--Testing (1)

Author

• Crawford, F. S. (1)
• Wirka, R. M. (1) *

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