00262nam a2200109Ia 4500008004100000082001500041100001300056245002600069250000900095260004000104300000800144240913s9999||||xx |||||||||||||| ||und||  a530  RAO/D  aAman rao 0aDictionary of physics  aNULL  bAnmol PublicationsaNew Delhic1987  a299