000 00268nam a2200109Ia 4500
008 190516s9999 xx 000 0 und d
100 _aCORE(MARVIN) &STUBBE(JOHAN)
245 0 _aELEMENTSOF SYSTEM ANALYSIS
260 _c1996
_bND GALGOTIA
300 _a544
942 _cBK
999 _c17235
_d17235