1955. Second Printing. 312 pages. No dust jacket. Grey cloth with gilt. Includes chart in the rear board pocket. Pages remain clear with minimal tanning and foxing. Some occasional mild cracking to gutters throughout, binding remains reasonably firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Mild crushing to spine ends. Book has a slight forward lean. Gilt lettering is darkened. Moderate tanning to spine.