000 002690000a22001090004500
245 _aSets and classes : on the work by Paul Bernays
100 _aMuller, G.H., ed.
260 _aAmsterdam
_bNorth Holland
_c1976
080 _a517.12
_bM8
041 _aEN
942 _cBK
999 _c101118
_d101118