000 00263nam a2200109Ia 4500
008 160710s1967 xx 000 0 und d
100 _aHELLERMAN,H.
245 _aDIGITEL COMPUTER SYSTEM
260 _aLONDON
_bMC GRAW HILL
_c1967
300 _a424
942 _2ddc
_cB
999 _c32167
_d32167