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082 _a621.952
100 _aCHUGH C.P
245 0 _aDRILLING TECHNOLOGY HANDBOOK
250 _aSecond
260 _aNEW DELHI
_bOXFORD & I B H-2
_c1983
300 _a460
650 _aDrilling Tech
942 _cGEN_BK
999 _c9837
_d9837