000			00317nam a2200133Ia 4500
008			221217s9999||||xx |||||||||||||| ||und||
020			_a9789351509127
082			_a658.314 DAS
100			_aG.P.Das gupta
245		0	_aMaintaining industrial disciple
260			_aNew delhi _bsage _c2022
300			_a210
942			_cBK
999			_c738 _d738