1962. Revised Edition. 176 pages. Green pictorial dust jacket over yellow cloth with black lettering to spine. Binding remains firm. Pages remain bright and clear with very light tanning throughout. Faint marking and light foxing to front free endpaper. Boards have light shelf-wear with slight corner bumping. Book has slight forward lean. Clipped jacket has light edgewear with tears and creasing. Light tanning overall. Wear marks overall.