1972. Twelfth Edition. 290 pages. Pictorial paper covers. Black and white photographic plates. Foldout maps. Minor foxing and noticeable tanning to pages and plates.More prominent to text block edges and reverse of covers. Hinges are lightly creased but covers remain firmly attached. Paper covers have light edge-wear and corner curling with visible tanning, rubbing and scuffing overall. Spine has minor rolling and creasing.