1964. Ninth Edition. 792 pages. Green dust jacket over green cloth covered boards with gilt. Pages remain clear with minimal tanning and foxing. Previous owner's inscription to half title and rear end paper. Some occasional mild cracking to gutters throughout, binding is shaky. 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.