00289nam a2200121Ia 45000030006000000080041000060400015000471000040000622450027001022600009001295460012001380050017001500STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aNarayanamurti, M.; Venkatesan, K.S.  aPre university physics  c1956  aEnglish20220125170106.0