00373nam a22001217a 450000500170000000800410001702000180005805000190007610000250009524500530012026000570017330000210023020260429110048.0260429b        |||||||| |||| 00| 0 eng d  a9878183568449  aQC 21.S4b2011  aDr Ajit Kumar Sharma  aTextbook of modern physicscDr Ajit Kumar Sharma  aNew delhibDiscovery Publishing house pvt, ltdc2011  ap.323.:ill.bHbk