1972. 3rd Edition. 139 pages. Pictorial dust jacket over blue cloth. Binding remains firm. Pages are lightly tanned throughout. Pencil inscription to front free endpaper. Boards have light shelf-wear with corner bumping. Light tanning to spine and edges with crushing to spine ends. Unclipped jacket has heavy edgewear with areas of loss, heavy tears, chips, and creasing. Light tanning to spine and edges. Water marking to spine.