000
00253nam a2200109 4500
008
160616s 000 0
245
_a
Non-euclidean geometry
100
_a
Kulczycki, Stefan
500
_a
B6M K1
942
_c
BK
_2
BK3395
080
_a
514.144 KUL
999
_c
3395
_d
3395