1966. Thirteenth Impression 1966. 137 pages. No dust jacket. Blue cloth boards with lettering. Slight crinkling to gutters however binding remains firm. Pages remain clear Pencil inscription to front free endpaper. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Slight crushing to spine ends. Lettering is bright and clear. Moderate sunning to spine and edges. Minor wear marks to boards.