000 00304nam a2200121Ia 4500
008 200526s9999||||xx |||||||||||||| ||und||
082 _a534 SAI
100 _aSaihgal, R.L.
245 0 _aOscillations and Waves Acoustics and Optics
264 _bS. Chand and Company
_c1975
300 _a413p.
942 _c
999 _c10862
_d10862