00265nam a2200109Ia 4500008004100000082001500041100001600056245002200072250000900094260004300103300000900146240913s9999||||xx |||||||||||||| ||und||  a540  DAS/N  aBy U N Dash 0aNuclear chemistry  aNULL  bSultan Chand and SonsaNew Delhic1991  a620p