000 00256nam a2200109Ia 4500
008 190516s9999 xx 000 0 und d
100 _aSYSTEMS & PROCESS
245 0 _aSCNCHSONOUS DIGITAL
260 _c1999
_bOPEN UNIVERSITY
300 _a132
942 _cREF
999 _c18862
_d18862