What can I say? There are 9 copies of this book in the library of my university and 8 of them have been checked out. The only one left is a reserved copy. And right now it's in the middle of a summer vacation! So many things that I want to know can be found in this book: the difference between Kerr effect and Faraday effect, the magneto-electric tensor, magnetic symmetries of crystals... etc. The explanations are usually very compact but extremely clear. Once many years ago I was frustrated at being unable to find a "physicist's description" of the galvanic cell. Finally, after searching many books and papers, I found a most satisfying explanation, exactly the way I needed it, in this book. It is an invaluable "reference" (but not textbook) for researchers working on material science, light-matter interactions, and related fields.