00278nam a2200109Ia 4500008004100000082001500041100001600056245002700072260003900099630001800138650001200156211109s9999||||xx |||||||||||||| ||und||  a534bAGR-C  aB S, Agrwal 0aConcise Physics: Sound  bNATIONAL BOOKSTALLaKottayamc1978  xGeneral Stack  vPhysics