Sixth Edition; Revised. 449 pages. No dust jacket. Blue cloth with gilt lettering. Contains black and white illustrations and photographs throughout. Pages are mildly tanned. Mild cracking to front hinge, however binding remains firm. Mild water staining to pages throughout. Boards have light edgewear with corner crushing and notable marking to boards. Heavy sunning to spine, which has mild crushing and tearing to ends. Mild water stains and droplets to surfaces. Book has forward lean. Boards are mildly warped.