Four volumes 8vo in the typical gorgeous Easton bindings. All are Fine, with no bumpting, no shelf wear, and a total of three very minor flaws to the page edge gilt.
About Robots and Empire
Robots and Empire is a science fiction novel by the American author Isaac Asimov and published by Doubleday in 1985. It is part of Asimov's Robot series, which consists of many short stories (gathered into several collections) and several novels featuring positronic robots.