1966. Thirteenth Edition. 344 pages. Illustrated dust jacket over red cloth covered boards with gilt. Pages remain clear with minimal tanning and foxing. 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. Book has a slight forward lean. Gilt lettering is bright and clear. Unclipped jacket has heavy edge-wear with some areas of loss, heavy tears, chips and creasing.