000 00299nam a2200121Ia 4500
008 210310s9999 xx 000 0 und d
040 _crty
100 _aLipschutz,Seymour
245 0 _aTheory and problems of set theory and related topics
260 _aNew Delhi
300 _a1979
942 _cTU
999 _c233724
_d233724