1967. Fourth Edition. 362 pages. Illustrated dust jacket over green cloth covered boards with gilt. Smoky odour. Pages remain clear with minimal tanning and foxing. 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. Moderate tanning to spine.