000
00275nam a2200121Ia 4500
008
230413s9999||||xx |||||||||||||| ||und||
082
_a
45GA
100
_a
Gakhov, F. D.
245
0
_a
Boundary value problems
260
_b
Dover Publications
260
_c
1990
942
_c
Books
999
_c
1944
_d
1944