000 00303nam a2200109Ia 4500
008 170101s1965 xx 000 0 und d
082 _a001.642
100 _aWhiteworth Donald
245 0 _aBasic Digital Computer Concepts.
260 _aLondon
_bHeinemann Educational Books Ltd.
_c1965
942 _2ddc
_cB
999 _c414766
_d414766