000 00253 a2200121 4500
080 _a621.311 NAG
082 _a621.9.06
_bNAG
100 _aNagpal, G R
245 _aMachine Drawing
300 _ax,658p.
942 _cBK
_2ddc
260 _aNew Delhi
_aKhanna
999 _c335608
_d335608