1961. Fourth Impression. 120 pages. Illustrative jacket over green cloth. Pages remain bright and clear with minimal tanning and foxing. Scuffing to front free endpaper and pastedown. Thumb-marking present. Noticeable creasing to gutter. Boards have mild edge-wear with slight rubbing to surfaces. Light crushing to spine ends. Some minor tanning to spine and edges. Minimal marks to boards. Textblock is shaky. Unclipped jacket has moderate edgewear with chips, tears and creasing. Loss to spine ends. Some tanning to spine. Visible rubbing to surfaces. Scuffing to edges.