00558nam a22001937a 4500 116645 116644 OSt 20260706112937.0 201021b ||||| |||| 00| 0 eng d 9788122434101 539.1 ROY Roy ,R R 291 Nuclear physics: Theory and experiment by Roy ,R R and Nigam B P 2ed. Delhi New age international publishers 2014 587p. Nucleon problem Beta decay Mathematical preliminaries Nigam ,B P 292 ddc BK