1939. Seventh Edition; Revised. 214 pages. Green dust jacket over blue cloth. Contains black and white plates throughout. Pages are moderately tanned and foxed throughout. Previous owner's inscription to front free endpaper. Thumb-marking present. Notable creasing to gutter. Cracking to gutters, with exposed netting. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Light tanning to spine and edges. Marks overall. Textblock is shaky. Unclipped jacket has heavy edgewear with some areas of loss, heavy tears, chips and, creasing. Visible tanning to spine. Notable rubbing to surfaces.