000
00290nam a2200121 4500
008
160616s 000 0
245
_a
Equations of mathematical physics
100
_a
Tikhonov, A.N
100
_a
Samarskii, A.A
500
_a
Bobc K3
942
_c
BK
_2
BK2333
080
_a
53:51 TIK
999
_c
2333
_d
2333