000 00263nam a2200109Ia 4500
008 220204s9999 xx 000 0 und d
082 _a681.3
_bDOD
100 _aDodd, K N
245 0 _aData processing
260 _aLondon
_bTeach Yourself Books
_c1969
942 _cBK
999 _c23033
_d23033