Seventh Edition. 475 pages. Pictorial dust jacket over blue cloth. Black and white photographic plates to centre of book. Binding remains firm. Pages and plates are lightly tanned throughout. Boards have light shelf-wear with corner bumping. Slight crushing to spine ends. Dents to top edge of front board. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Light tanning to spine and edges. Wear marks overall.