000			00303nam a2200133Ia 4500
100			_aCHUGH C P
650			_aDrilling Technology
365			_cRS
365			_d1
942			_cENGBK
245			_aManual of Drilling Technology
260			_bOxonian Press Pvt Ltd _c1985 _aNew Delhi
300			_aXV+567 PP
999			_c30490 _d30490