000 00259nam a2200109Ia 4500
008 220201s1983 xx 000 0 eng d
100 _aCROFT G M
245 0 _aCOMPUTER STUDIES
260 _aCANADA
_bHODDERS AND STOUGHTON
_c1983
300 _a216
942 _2ddc
999 _c91156
_d91156