1961. Reprint. 250 pages. Green jacket over green cloth. Contains black and white photographs and diagrams throughout. Pages remain bright and clear. Binding is firm. Previous owner's inscription to front free endpaper. Boards and spine have minimal shelf-wear, with mild corner bumping and crushing to ends. Unclipped jacket. Light tanning to all surfaces, heavier to spine and edges. Panels have light edgewear, with small tears, chips and creases, heavier to spine ends. Visible marking to exterior.