000
00254nam a2200097Ia 4500
008
190428s9999||||xx |||||||||||||| ||und||
100
_a
Gaal, S.A.
_9
19992
245
_a
Point set topology
250
_b
1964. xi-317
260
_b
Academic press. New York, India
999
_c
19780
_d
19780