Ninth Edition. 460 pages. No dust jacket. Grey paper covered boards with lettering. Contains black and white illustrations. Clean pages and illustrations with noticeable tanning and foxing throughout. More pronounced to free endpapers and pastedowns. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Moderate tanning to spine and edges with crushing to spine ends. Minor splits to spine ends and corners. Visible wear marks to boards.