000 00263nam a22001217a 4500
999 _c35736
_d35736
020 _a9788121901635
082 _a530/THE
100 _aTherajaj B.L.
245 _aModern Physics
260 _aDelhi
_bS.Chand and Company Ltd.
_c2021
300 _a325
942 _cBK