00313nam a2200145Ia 4500003000400000005001700004008004000021040000700061041000800068082001100076100002100087245003100108260002000139300000800159OSt20221121152412.0210210b1937   xxu||||| |||| 00| 0 eng d  cAL  aeng  a538/57  aVENKATESAN (K S)  aGuide to practical physics  aMadrasb-c1937  a289