1971. Second printing. 214 pages. Laminated pictorial dust jacket over blue cloth. Black and white photographs and diagrams. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Minor pen inscription to front free endpaper. Boards assumed in good condition as covered with laminated jacket. Unclipped jacket has light edge wear with minor tears, chipping and creasing. Some mild sunning.