000 00284nam a2200121Ia 4500
008 200906s9999 xx 000 0 und d
082 _a744.422 W439
100 _aWELCH.H.E
245 0 _aBASIC MECHANICAL DRAWING
260 _bMCGRAW, NEW YORK
_c1959
300 _a26X19
942 _cBK
999 _c60911
_d60911