000 00283nam a22001217a 4500
999 _c35703
_d35703
020 _a9789387788237
082 _a530/PIL
100 _aGupta M.L.
245 _aModern Physics & Solid State Physics
260 _aDelhi
_bNew Age International Pub
_c2021
300 _a580
942 _cBK