It's pretty much the standard book to study pawn structure. IM Danny Rensch recommends it to accompany his pawn structure videos. It seems well written, but it's pretty dry due frankly to the subject matter. Definetely a book that needs to be studied with a chess set unless you're a genius or something. I need to give it another go.
The only other book I know of is Hans Kmoch"s Pawn Power. That is also supposed to be excellent although he apparently introduces his own special vocabulary which I wasn't up for learning. You could do a Search Forums for some earlier threads on the subject.
Has anybody read Pawn Structure Chess by Andy Soltis? If so, is it good and worthwhile purchasing? If not, is there something else that is better for learning about pawn structure?