1952. Fourth Edition. 422 pages. Blue dust jacket over blue cloth. Clean pages with noticeable tanning and foxing throughout. Tightly bound with faint thumb-marking throughout. Previous owner's inscription to front pastedown and endpaper. Boards have light shelf-wear with corner bumping. Mild tanning to spine, which has mild crushing and wear to ends. Unclipped jacket has light edgewear with tears and creasing. Light rubbing and marking to panels. Moderate tanning to spine and panel edges.