Twenty-seventh Edition. 480 pages. Illustrated dust jacket over red cloth boards with lettering. Clean pages with light tanning and mild foxing throughout. Moderate tanning to free endpapers due to dust jacket flaps. Pencil markings to front free endpaper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Lettering is bright and clear. Unclipped jacket. Panels and spine have light edgewear with tears and creases. Price sticker to panel. Visible wear marks to spine and panels.