1946. 5th Edition, 3rd Impression. 616 pages. No dust jacket. Blue cloth. Black and white illustrations throughout. Binding remains firm. Pages have light tanning and foxing throughout. Previous owner's inscription to front free endpaper. Water staining to some page edges, text remains unaffected. Boards have moderate shelf-wear with bumping to corners and rubbing to surfaces. Slight crushing to spine ends. Light mottling to rear board.