BCO 2 is the definitive single- volume openings encyclopedia. it has been designed both for maximum ease of use and for maximum relevance to the needs of competitive players. it is the essencial book, whatever your standard of play.
Russian (formerly Soviet) chess grandmaster, former World Chess Champion, writer, and political activist, whom many consider the greatest chess player of all time.
A good one volume collection on chess openings. As could be expected, it is a bit dated by now, but there are still lots of lines of analysis for the player to look over.