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IMPROVING THE PERFORMANCE OF TUNNEL RAISE AND SHAFT BORING MACHINES FOR COAL MIN

by UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF MINES.

Material type: book Book; Format: print ; Literary form: Not fiction Publisher: SPRINGFIELD U.S.DEPT.OF INTERIOR 1986Availability: Items available for loan: [Call number: 622.26 U58] (1).

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