000
00219 a2200097 4500
001
39857
100
_a
Khanna D R
245
_a
Textbook of Sound
260
_a
New Delhi
_b
Atma Ram & Sons
_c
1988
090
_c
24858
_d
24858
942
_a
NUST-CAE
_c
M
_c
16511
999
_c
274930
_d
274930