1960. Tenth Edition. 546 pages. Green dust jacket over brown cloth. Pages remain bright and clear with minimal tanning and foxing. Front free endpaper is removed. Pencil inscription to front pastedown. Sticker to rear free endpaper. Some creasing to gutter. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Light tanning to spine and edges. Minor marks to boards. Clipped jacket has moderate edgewear with chips, tears and creasing. Some tanning to spine. Visible rubbing to surfaces.