1964. First Edition. 142 pages. Signed by the author. Pictorial dust jacket over blue cloth with gilt lettering. Black and white photographic plates and diagrams throughout. Flat signed by author to front free endpaper. Pages with some tanning. Binding remains firm. Boards with slight tanning. Gilt lettering remains bright and clear. Unclipped jacket has light edge wear with minor tears and chipping but quite heavy tanning.