This classic volume by 3-time World Champion Ray Martin has impacted the games of a lot of players. It is one of the best selling instructional books about pool and has been around since 1976. People are still talking about shots first revealed in this book.
Part of it is specific to straight pool, but most applies to all games and covers the 99 most critical shots and secrets of positional play.
This second edition is totally revamped with up-to-date photos and a full color cover.