000 00268nam a22001217a 4500
999 _c35732
_d35732
020 _a9788121909099
082 _a530/ARO
100 _aArora C.L.
245 _aB.Sc Practical Physics
260 _aDelhi
_bS.Chand and Company Ltd.
_c2021
300 _a683
942 _cBK