1955. Thirteenth Edition. 154 pages. Dust jacket over blue cloth. Clean pages with noticeable tanning and foxing to endpapers. Tightly bound with faint thumb-marking throughout. Previous owner's inscriptions to front endpaper. Boards have light shelf-wear with corner bumping. Moderate tanning to spine, which has mild crushing and wear to ends. Books has a backward lean. Mild scuffing to edges. Clipped jacket has moderate edgewear with chips, tears, and creasing. Heavy foxing. Mild tanning to spine. Light rubbing and marking all over.