Isher

The Empire of Isher (by AE Van Vogt) combines both The Weapon Shops of Isher and The Weapon Makers into a single edition. The combined work is still under 300 pages, but the sparse writing style means that a lot of action can be packed into those pages. While this edition was published in 2000, the stories themselves are noticeably dated. They are also unique and very hard to describe.