1956. Third Impression. 399 pages. No dust jacket. Red cloth boards with gilt lettering. Contains folded diagrams. Prize plate stuck to front pastedown. Slight crinkling to paper at gutter. Clean pages with light tanning and foxing to text block edges. Binding is firm throughout with minor thumb-marking. Pen and pencil inscription and markings to front free endpaper and pastedown. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Slight crushing to spine ends. Gilt lettering is darkened. Moderate sunning to spine and edges. Visible wear marks to boards. Book has a moderate forward lean.