No edition remarks. 153 pages. Pictorial dust jacket over pictorial paper covered boards. Black and white photographs and diagrams. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. Boards have heavy shelf wear with bumping and rubbing to corners and crushing, rubbing and tearing to spine ends and edges. Book has slight forward lean. Boards are slightly bowed. Unclipped jacket has heavy edge wear with large tears, chipping and creasing. Some rubbing and marking to surfaces.