1965. Reprinted. 234 pages. Dark blue dust jacket over light blue cloth with dark blue lettering to front & spine. Contains black and white diagrams. Pages remain bright with minimal tanning. Text is clear. Thumb-marking present. Binding remains firm. Boards have mild edge-wear with bumping to corners. Slight crushing to spine ends. Blue lettering is bright and clear to front board & spine. Clipped jacket. Panels have moderate edge wear with chips, tears, and creasing.