000 00310nam a2200133Ia 4500
100 _aChoudhary, Hajra S. K
020 _a81-85099-15-4
250 _a9th ed.
942 _cBK
245 _aWorkshop technology
260 _aMedia promoters & publishers, Mumbai
_c1997
082 _a621.9 Cho
300 _axv,688
999 _c35617
_d35617