1960. Fourth Edition. 564 pages. Plain dust jacket over black cloth covered boards with gilt. Pages remain clear with minimal tanning and foxing. Previous owner's inscription to front free end-paper. Some occasional mild cracking to gutters throughout, binding is shaky. Hinges are cracked with exposed netting. 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. Clipped jacket has light edge-wear.