1968. Fourth Printing. 654 pages. No dust jacket. Green cloth covered boards with gilt lettering. Pages remain clear with minimal tanning and foxing. Previous owner's inscription to front free end-paper. 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 darkened. Cloth has minor damp and dust stains.