00273nam a2200109Ia 4500008004100000082001700041100001900058245003300077250000900110260003600119300000800155240913s9999||||xx |||||||||||||| ||und||  a512.5  NAR/A  aShanti Narayan 2aA textbook of vector algebra  aNULL  bS Chand and CoaNew Delhic2006  a248