Immortals of Science series. Ex-library, in very good condition (boards protected by a clear plastic wrapper), Title, author and graphics printed directly on front / rear boards, text-block tight, hinges firm, top page-ends factory stained. Blacked-out library markings inside book, card pocket in rear. Please see pics for condition details. Overall a very solid copy that will be well-packaged and promptly shipped with USPS Media Mail.