1964. Fourth Impression. 525 pages. Orange dust jacket over blue cloth. Bright and clean pages with light tanning to text block edges. Binding is firm throughout with minor thumb-marking. Small liquid to lower front pastedown and endpaper. Boards have light shelf-wear with corner bumping. Mild crushing to spine ends. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Mild water droplets to spine. Mild sunning to spine. Light rubbing and marking all over.