1967. Fourth Edition. 980 pages. No dust jacket. Blue cloth with gilt. Pages remain clear with minimal tanning and foxing. Previous owner's inscription to front free end-paper. Last page creased. Text block edge is moderately foxed. Binding remains firm. Cracking to hinges, no damage to end papers. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Mild crushing to spine ends. Book has a slight forward lean. Gilt lettering is bright and clear.