1968. Ninth Impression. 939 pages. Dust jacket over green cloth. Clean pages with mild tanning and foxing to endpapers. Tightly bound with faint thumb-marking throughout. Droplet and sticker to front endpaper. Mild droplet staining to text block edges. Boards have light shelf-wear with corner bumping. Mild sunning to spine and edges. Mild water stains to boards. Small dent to lower edge of front board. Book has forward lean. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Mild foxing. Moderate tanning to spine. Light rubbing and marking all over.