1952. First Edition. 232 pages. Pictorial dust jacket over green cloth. Black and white photographs and diagrams. 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 heavy wear with tears, chipping and creasing. Some tanning and foxing to all surfaces, particularly to spine. Some tape repairs to inside.