000 00321nam a2200109Ia 45e0
008 181001s1989 xx 000 0 und d
100 _aMasteller
245 4 _aThe systems Programming prob.
260 _aU.S.A
_bQ.E.O ins.sci.
_c1989
300 _a260
942 _2ddc
_cBK
999 _c3964
_d3964