1962. Sixth Edition. 190 pages. Pictorial dust jacket over paper to boards. Black and white illustrations throughout. Clean pages with mild tanning and moderate foxing throughout. Tightly bound with faint thumb-marking throughout. Mild water staining to pages throughout. Boards have light shelf-wear with corner bumping. Moderate tanning to spine and edges. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Heavy foxing. Heavy rubbing and marking all over.