Unique in its union of advanced scope and intermediate audience, this textbook is described as an introduction to the standard model for upper year undergraduates.  Although I highly recommend this book, here are four points for prospective buyers - :<br><br>1. The treatment of the subject IS quantitative, although the first 2 chapters are entirely qualitative.<br><br>2. Assumed knowledge: special relativity (freshman level), quantum mechanics (sophomore), and electrodynamics (sophomore).<br><br>3. The development of the subject is incomplete in the sense that many derivations/proofs are omitted.  It is not for readers expecting a logically complete development of the subject from the bottom up.<br><br>4. The errata sheet (available from the publisher) will be needed.