1956. Reprint. 560 pages. Green dust jacket over green cloth. Contains black and white illustrations and diagrams throughout. Pages are moderately tanned and foxed throughout. Pen inscription to front pastedown. Thumb-marking present. Notable creasing to gutter. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Notable crushing to spine ends. Light tanning to spine and edges. Water staining and marks to boards. Textblock is shaky. Unclipped jacket has heavy edgewear with some areas of loss, heavy tears, chips and, creasing. Thumb-marking present. Visible rubbing to surfaces. Heavy tanning to spine and edges.