000 00278nam a2200121Ia 4500
008 211126s9999 xx 000 0 und d
082 _a604.2
100 _aR. K. DHAWAN
245 0 _aA. T. B. OF ENGINEERING DRAWING
260 _bS CHAND
365 _b340.00
942 _cBTECH
999 _c152287
_d152287