00288nam a2200109 a 450000500170000008200190001710000300003624500420006625000150010826000360012330000190015920251203091515.0  a539.7,bD, sri  aSrivastava, Bhoop Narayan  aBasic nuclear physics and cosmic rays  a8th ed rev  aMeerutbPragati Prakashanc1987  axvi,587p, 22cm