1952. Reprinted. 140 pages. Pictorial dust jacket over brown cloth. Black and white photographs and diagrams. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Minor pencil inscriptions to front free endpaper. Boards have mild shelf wear with light rubbing and corner bumping. Some light marking and tanning. Boards are slightly bowed. Unclipped jacket has light edge wear with minor tears, chipping and creasing. Some rubbing and marking to surfaces.