1964. 5th Printing. 522 pages. Illustrated dust jacket over blue cloth covered boards. Pages remain clear with minimal tanning and foxing. Half title page has been corner clipped.Cracking to hinges, no damage to end papers. Some occasional mild cracking to gutters throughout, binding remains reasonably firm. Boards have mild edge-wear with slight rubbing to surfaces. Cloth has minor damp and dust stains. Book has a slight forward lean. Unclipped jacket has light edge-wear.