00325nam a2200121Ia 4500008004100000041000800041084001000049100002100059245003700080260005700117546001700174653001200191160807s1971    xx            000 0 mal d  amal  aC2CC  aNambeesan, C. N.  aBhouthikam /cby C. N. Nambeesan  aThiruvananthapuram :bKeral Bhasha Institute,c1971.  aIn Malayalam  aPhysics