00271nam a2200109Ia 4500008004100000082001500041100001200056245002600068250000900094260005000103300000800153240913s9999||||xx |||||||||||||| ||und||  a530  NAI/T  aPV Naik 0aPrinciples of Physics  aNULL  bPHI Learning private LimitedaNew Delhic2009  a341