000
00326nam a2200133Ia 4500
001
12008
008
170722s9999 xx 000 0 und d
100
_a
Kagan, V.
245
_a
N Lobachevsky and his contribution to science tr by B Katah /
260
_c
1957.
653
_a
Biography
653
_a
Mathematics
942
_c
GEN
999
_c
85273
_d
85273