1958. No edition remarks. 302 pages. Pictorial dust jacket over purple cloth. Black and white photographs and diagrams. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Boards have mild shelf wear with light rubbing and corner bumping. Some moderate marking and sunning. Unclipped jacket has light edge wear with minor tears, chipping and creasing. Some rubbing and marking to surfaces.