1951. Reprinted. 495 pages. Pictorial dust jacket over red cloth. Black and white photographs and diagrams. Pictorial endpapers. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Minor pencil inscriptions to front free endpaper. Boards have light shelf wear with minor corner bumping and crushing to spine ends. All surfaces tanned and sunned, particularly spine. Gilt lettering is dulled. Unclipped jacket has heavy edge wear with tears, chipping and creasing. All surfaces heavily tanned, particularly spine.