000 00288nam a2200121Ia 4500
999 _c13583
_d13583
100 _aGopal Chandra Sen
245 _aPrinciplespf Machine Tools
250 _a2
260 _c1988
_bNEW CENTRAL BOOK AGENCY
_aCalcutta
300 _axx+954
700 _aAmitabha Bhattacharyya
942 _cBK