1968. Sixth Impression. 160 pages. Pictorial dust jacket over green cloth. Contains black and white photographic plates. Pages and plates are lightly tanned and foxed throughout. Cracking to front hinge with exposed binding. Binding is slightly shaky. Boards have mild edge wear with slight rubbing to surfaces. Soft crushing to spine ends. Light tanning to spine and edges. Clipped jacket has heavy edge wear with some areas of loss, heavy tears, chips and creasing. Mild sunning to spine and edges. Some rubbed dark marking to panels.