1965. First Edition. 112 pages. Pictorial dust jacket over blue cloth. Black and white and colour photographs. Black and white diagrams. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. Dedication to front free endpaper. Boards have light shelf wear with minor corner bumping and crushing to spine ends. Some mild marks and staining to surfaces. Clipped jacket has light edge wear with minor tears, chipping and creasing. Some water marking to surfaces. Spine noticeably sunned.