00371nam a22001457a 4500 117272 117271 OSt 20260706113030.0 211217b ||||| |||| 00| 0 eng d 9788121910958 539.1 GHO GHOSHAL,S N 1067 ATOMIC PHYSICS: MODERN PHYSICS GHOSHAL,S N NEWDELHI S CHAND 2018 ddc BK