1955. Fourth Edition. 346 pages. No dust jacket. Green cloth. Pages are lightly tanned and foxed throughout, heavier to endpapers. Occasional thumb-marking present. Minor stamped marking to a few pages. Binding is slightly shaky. Boards have moderate edge wear with bumping to corners and rubbing to surfaces. Soft crushing to spine ends. Mild tanning to spine and edges. Scuffing and light marking overall. Water staining to front board, with red and gold marking to edge. Minor white mark to rear board.