For some reason, this book is used in undergraduate programs across the nation. I don't know why, this is miles above Boas. This is definitively a graduate textbook. And when viewed as a graduate textbook, it is phenomenal. In fact, it's a bit on the easy side for graduate students, but it's nice to coalesce and generalize all your knowledge gained in undergraduate courses. It covers everything you need to know for Jackson, Sakurai, Goldstein and much more.<br><br>It seems as the others of this book picked up Jackson and said "this isn't a derivation, he just stated the result," then decided to develop it in this book. Jackson develops Green functions in like three paragraphs and thinks it is sufficient for somebody new to the topic. AW takes Greens functions and does the work that Jackson was too lazy to do for you.