1960. Fourth Edition. 648 pages. No dust jacket. Grey cloth. Clean pages with mild tanning to endpapers. Tightly bound with mild thumb-marking throughout. Previous owner's inscription to front endpaper. Minor marks to rear hinge. Boards have light shelf-wear with corner bumping. Mild tanning to spine, which has mild crushing and wear to ends. Moderate water stains to front board. Mild scratching and marking to boards. Book has forward lean. Boards are mildly warped.