000
00287nam a2200121 4500
008
160616s 000 0
245
_a
Elements of functional analysis
100
_a
Lusternik, L.A
100
_a
Sobolev, V.J
500
_a
B43 K1
942
_c
BK
_2
BK3032
080
_a
517.98 LUS
999
_c
3032
_d
3032