000 00272nam a2200121Ia 4500
008 170912s9999 xx 000 0 und d
082 _a511.322 KUM/S
100 _aKUMARAVELU S
245 0 _aSET THEORY & NUMBER SYSTEMS
261 _c2000
300 _a259
942 _cTB
999 _c30761
_d30761