1953. Fourth Revised Edition. 490 pages. Green dust jacket over black cloth. Contains black and white in-text illustrations. Pages are lightly tanned and foxed throughout. Minor pencil inscription to front free endpaper. Binding remains firm. Boards have mild edge wear with slight rubbing to surfaces. Soft crushing to spine ends with small splits. Light water staining to surfaces. Unclipped jacket has moderate edge wear with chips, tears and creasing. Heavy sunning to spine and edges. Water staining to panels - heavier to spine. Scuffing to spine.