1963. 6th Edition, Revised & Enlarged. 389 pages. Red and blue 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. Slight crushing to spine ends. Unclipped jacket has heavy edgewear with areas of loss, heavy tears, chips, and creasing. Light tanning to spine and edges. Wear marks overall.