1960. Seventh Edition. 728 pages. Dust jacket over blue cloth with gilt lettering. Pages are bright and clear with light scuffing and tanning to text block edges. Pen inscription to front free endpaper. Binding is very slightly loose but pages remain attached. Boards have minor corner bumping and edgewear with mild tanning and scuffing overall. Spine has light tanning with soft crushing to ends. Lettering remains bright and clear. Book has a slight forward lean. Unclipped dust jacket with minor rubbing, chipping and tearing to edges. Some minor tanning, creasing and scuffing overall.