000 00254nam a2200109Ia 4500
008 220201s1972 xx 000 0 eng d
100 _aCHAPMAN W A J
245 0 _aELEMENTARY WORKSHOP CALCULATIONS
260 _bELBS
_c1972
300 _a259
942 _2ddc
999 _c30565
_d30565