1971. 11th Edition. 22 pages. Pictorial dust jacket over red cloth. Dutch text. Black and white and colour illustrations throughout. Book has a slight smoky odour. Binding remains firm. Pages and illustrations have light tanning and foxing throughout. Pencil inscription to front free endpaper. Boards have light shelf-wear with corner bumping. Very slight crushing to spine ends. Unclipped jacket has heavy edgewear with areas of loss, heavy tears, chips, and creasing. Light tanning to spine and edges. Light foxing overall.