000 00309nam a2200133Ia 4500
008 221231s9999 xx 000 0 und d
100 _aWiegers , Karl E
_91988
245 0 _aSoftware Requirements
260 _bW P Pub
260 _c1999
300 _a350
650 _aComputer Science
_91989
942 _cBE_BK
999 _c2295
_d2295