000
00273nam a2200109Ia 4500
008
210901s1988 xx 000 0 eng d
082
_a
537.534 GUP
100
_a
Gupta, S K
245
0
_a
Waves and oscillations
260
_a
New Delhi
_b
R Chand & Co.
_c
1988
942
_2
ddc
_c
BK
999
_c
18294
_d
18294