GURPS Traveller: Behind the Claw

From the back of the book: "Behind the Claw details the Spinward Marches, a complete sector of space for GURPS Traveller. Over 400 star systems are described in detail, along with essays on the Imperial nobility and system of government, a detailed history of the region, Game Master's information, current events and a wealth of adventure material. The setting is rich and diverse, with unlimited scope for campaigns."