000 00283nam a22001337a 4500
020 _a9788121909099
082 _a539.72/ARO
100 _aArora C.L.
245 _aB.SC. Practical Physics
260 _aDelhi
_bS.Chand.Co.
_c2023
300 _a693
650 _aPhysics
942 _cBK
999 _c37384
_d37384