I am a big Pachman fan and really really wanted to give this 5 stars, but I couldn't do it.
First, there are quite a few notational errors. Most of them appear to be mistranslations from algebraic. Second, there are some basic analytical errors (I don't mean lines that are out of date, that would only matter to players rated higher than me who are memorizing lines two dozen moves in). Third, some openings (most notably the Petroff) do not get sufficient treatment.
The chapters on the Ruy Lopez and the King's Gambit are outstanding and still useful to a class tournament player to this day. All in all, not a bad opening book.