00321nam a2200133Ia 4500008004100000041000800041084001100049100002200060245005600082260001000138546001700148653001200165653001000177160807s1967    xx            000 0 mal d  amal  aC32CC  aMohananpillai, K.  aKelkkan kazhiyatha sabdangal /cby K. Mohananpillai  c1967.  aIn Malayalam  aPhysics  aSound