1971. Third Printing. 159 pages. Blue and green dust jacket over white cloth. Contains black and white in-text illustrations. Pages are lightly tanned and foxed throughout. Light thumb-marking present. Binding remains firm. Previous owner's inscription to front pastedown. Boards have mild edge wear with slight rubbing to surfaces. Soft crushing to spine ends. Light tanning to spine and edges. Unclipped jacket has moderate edge wear with chips, tears and creasing. Light tanning to spine and edges. Scuffing and light marking overall.