U.S.BUREAU OF MINES
SAFER AND MORE PRODUCTIVE MINING THROUGH HIGH PRESSURE WATER JETTING - NEW YORK U.S.BUREAU OF MINES 1988 - 28X22
622.2 U58
SAFER AND MORE PRODUCTIVE MINING THROUGH HIGH PRESSURE WATER JETTING - NEW YORK U.S.BUREAU OF MINES 1988 - 28X22
622.2 U58