1952. First Edition. 644 pages. No dust jacket. Blue cloth boards with gilt lettering to spine. Black and white diagrams, charts and photographic plates throughout. Binding remains firm. Crinkling to pages at gutters. Pen inscriptions to front endpaper & pastedown. Pages are moderately tanned throughout. Occasional foxing. 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 and faded. Book has a slight forward lean.