1950. No Edition Remarks. 212 pages. No dust jacket. Blue cloth boards with gilt lettering to spine. Black and white illustrations, diagrams and photographic plates throughout. Binding remains firm. Crinkling to pages at gutters. Pages are moderately tanned throughout. Thumb marking present. Previous owner's inscription to front endpaper. Boards have mild edge wear with slight rubbing to surfaces. There is bumping to corners and crushing to spine ends. Tanning to spine and edges. Gilt lettering is darkened. Boards are bowed. Book has a slight forward lean.