1966. Fifth Edition. 369 pages. No dust jacket. Green cloth boards with gilt lettering. Slight crinkling to gutters however binding remains firm. Pages remain bright and clear with minimal tanning and foxing. Pencil annotations and marginalia to a few pages. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Slight crushing to spine ends. Slight splits to spine end. Gilt lettering is bright and clear. Book has a slight forward lean.