000
00270nam a2200121 4500
008
160616s1963 000 0
245
_a
Differential geometry
100
_a
Pogerelov, A.v
260
_c
1963
500
_a
B6:3 K3
942
_c
BK
_2
BK513
080
_a
514.7 POG
999
_c
513
_d
513