000
00266nam a2200121 4500
008
160616s 000 0
245
_a
Abstract set theory
100
_a
Fraenkel, Abraham A
250
_a
2
500
_a
B31 K1
942
_c
BK
_2
BK893
080
_a
510.21 FRA
999
_c
893
_d
893