1962. Fourth Edition. 312 pages. No dust jacket. This is an ex-Library book. Blue cloth. Book has been rebound by library, with expected inserts, stamps and inscriptions. Pages remain bright and clear with minimal tanning and foxing. Thumb-marking present. Noticeable creasing to gutter. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Soft crushing to spine ends. Light marks to boards.
Not light reading. If you have a big ego prepare to be humbled. I read somewhere be that Einstein wrote a colleague that he couldn't understand Dirac. Perhaps he was joking, but not necessarily. Brilliant. I've written and read much math and science and to me this is first rate. And it's even richer if you read up on his life story.