1977. 25th Edition. 821 pages. No dust jacket. This is an ex-Library book. Black imitation leather with gilt lettering. Expected library inserts, stamps and inscriptions. Pages remain bright and clear with minimal tanning and foxing. Thumb-marking present. Some creasing to gutter. Boards have mild edge-wear with slight rubbing to surfaces. Minor tanning to spine and edges. Light marks to boards. Gilt lettering is bright and clear. Textblock is shaky.