000
00220 a2200097 4500
001
6374
100
_a
Duff, G F D
245
_a
Deferential Equations of Applied Mathematics
260
_a
_b
Wiley
_c
090
_c
5248
_d
5248
942
_a
NUST-CAE
_c
M
_c
31654
999
_c
241447
_d
241447