An encyclopedic work on the subject at 600 pages. The book is in Very Good condition but with ex libris marks. An early work on the subject and with Penrose and Sciama as contributors.
That is my main goal for collectors and readers: a good deal. and that probably is a good trend. Now consider books. While they are things, they can provide or lead to magnificent experiences. A room with books is no small room!
First edition, 1950. I will always list any imperfections I see in a piece, but can occasionally miss smaller imperfections.