This kind of text is very good for beginning students and as reference.There are nice diagrams of new machines, mentions of breaks in the standard modeland neutrino mass. The Klein-Gordon equation is given in it's nativedimensional units of 1/ length^2 which is better than in many texts that I have that use more artificial units in Messiah, Weinberg and Gordon Kane.The text lacks a necessary approach to quantum groups or I would have given it 5 stars.