1969. Sixth Impression. 255 pages. Pictorial paper cover. Pages are lightly tanned and foxed throughout. Cracking to hinges with covers slightly coming away from text-block. Light staining to text-block edges. Paper cover has moderate edge wear with scuffing to edges and creasing. Scuffing to spine ends. Book has rolled spine. Light tanning to spine and edges. Mild rubbing to surfaces with curling to corners. Some white staining to front cover.