1956. Seventh Edition; Revised. 198 pages. Dust jacket over red cloth. Clean pages with mild tanning and foxing throughout. heavy foxing to endpapers. Tightly bound with faint thumb-marking throughout. Pencil inscription to front endpaper. Mild droplet staining to text block edges. Boards have light edge wear with minor corner bumping. Mild crushing to spine, with occasional markings overall. Book has forward lean. Clipped jacket has light edgewear with tears and creasing. Heavy foxing. Pencil to front flap. Mild tanning to spine. Mild rubbing and marking all over.