1961. Third Edition. 267 pages. Plain paper covers. Minor foxing and moderate tanning to pages. More prominent to text block edges, pastedowns and free endpapers. More prominent to text block edges, lighter to reverse of covers. Hinges are lightly cracked and stained but covers remain firmly attached. Paper covers have light edge-wear and corner curling with moderate tanning and scuffing overall. Spine has heavier tanning with minor rolling and creasing.