000 004050000a22001570004500
008 140223b1962 xxu||||| |||| 00| 0 eng d
041 _aENG
080 _aB312 K2
082 _aB312 K2
100 _aJOHNSON (Robert L.)
700 _aZEHNA (Peter W.)
245 _aElements of set theory.
260 _aBoston
_bAllyn & Series
_c1962
440 _aCollege Mathematics Series.
650 _aSET THEORY
999 _c252808
_d252808