000 00280nam a2200121Ia 4500
100 _aWelss, Harold & McGrath J. B.
020 _a07-069085-5
942 _cBK
245 _aTechnically speaking
260 _aMcGraw - Hill, New York
_c1963
082 _a808.52 Wel
300 _axi,254p
999 _c7064
_d7064