1956. Ninth Edition. 170 pages. No dust jacket. Pictorial blue paper covered boards. Contains black and white in-text illustrations. Pages are lightly tanned and foxed throughout, heavier to endpapers. Occasional thumb-marking present. Previous owner's inscription to front free endpaper. Binding is slightly shaky. Boards have moderate edge wear with bumping to corners and rubbing to surfaces. Soft crushing to spine ends with splits. Book is bowed and forward leaning. Mild tanning to spine and edges. Peeling to plastic to paper boards. Some bleached marking to rear board.