1968. No edition remarks. 222 pages. Pictorial dust jacket over brown cloth. Black and white photographs and diagrams. Prize plate on front free endpaper. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. Boards have light shelf wear with minor corner bumping and crushing to spine ends. Clipped jacket has light edge wear with minor tears, chipping and creasing. Spine noticeably sunned.