00314nam a2200121 a 450000500170000002000180001708200150003510000190005024500210006926000380009030000250012849000390015320251203111621.0  a9788184892062  a511.3bHAL  aHalmos, Paul R  aNaive set theory  aNew YorkbSpringerc1974 - R 2009  avi, 104p.c23cm.bPB  aUndergraduate texts in Mathematics