1962. Reprint. 76 pages. Pictorial jacket over blue cloth. Contains black and white diagrams throughout. Contains black and white photographic plates to centre of textblock. Pages and plates remain bright and clear. Binding is firm. Boards and spine have minimal shelf-wear, with minor corner bumping and crushing to ends. Unclipped jacket. Light tanning to all surfaces. Panels and spine have moderate edgewear, with noticeable chipping, tearing and creasing, and some areas of loss.