23rd Edition. 248 pages. No dust jacket. Blue cloth. Contains black and white illustrations throughout. Pages remain bright and clear with minimal tanning and foxing. Previous owner's inscription to front pastedown. Light creasing to gutter. Pages remain intact. Boards have mild edge-wear with slight rubbing to surfaces. Soft crushing to spine ends. Light tanning to spine and edges. Notable white marks and water staining to boards. Boards are slightly bowed.