000
00254nam a2200109 4500
008
160616s 000 0
245
_a
Problems in theoretical physics
100
_a
Grechko, L.G.
500
_a
C L7
942
_c
BK
_2
BK7013
080
_a
53.01 GRE
999
_c
7013
_d
7013