1967. First Edition. 523 pages. No dust jacket. Tan and red cloth with black lettering. Contains black and white diagrams. Binding remains firm. Pages remain bright with minimal tanning. Pencil and pen inscription to front free end paper. Noticeable tanning to text block edges. Boards have moderate edge-wear with bumping to corners and noticeable rubbing to surfaces. Moderate tanning to spine and edges. Mild crushing to spine ends causing cloth to fray.