000
00309nam a2200121 4500
008
160616s 000 0
245
_a
Two dimensional manifolds of bounded curvature
100
_a
Aleksandrov, A.D
100
_a
Zalgaller, V.A
500
_a
B632 K71
942
_c
BK
_2
BK3380
080
_a
514.144 ALE
999
_c
3380
_d
3380