a book reconmendation

I found a book that is written by a international grandmaster called Andrew soltis. The title is called Pawn structure chess. It's real good book. In the first few page, I already learned something new about the pawn structures. The book tells about the strengths and weakness of famous openings like sicilians and ruy lopez. The publisher is McKay Chess Library. If you can try and get ur hands on this particular book.