1967. Sixth Impression. 631 pages. Plain dust jacket over red cloth covered boards with gilt. Pages remain clear with minimal tanning and foxing. Previous owner's inscription to front free end-paper. Cracking to hinges, no damage to end papers. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends. Gilt lettering is bright and clear. Book has a slight forward lean. Unclipped jacket has moderate edge-wear with chips, tears and creasing.