000
002330000a22001090004500
245
_a
Exercises in set theory
100
_a
Sigler, L.E.
260
_a
New Delhi
_b
Nerosa
_c
1976
080
_a
519.5
_b
S5
041
_a
EN
942
_c
BK
999
_c
110512
_d
110512