1968. Sixth Impression. 185 pages. No dust jacket. This is an ex-Library book. Green library bound boards with black lettering. Pen & pencil marking to pages on occasion, with some staining. Notable foxing and tanning to endpapers and page edges. Ex-library with usual stamps, inserts and markings. Mild wear and bumping to spine, board edges and corners. Moderate sunning to spine and board edges, with scuffing and soiling to boards. Sticker to spine.