1966. Fourth Impression. 364 pages. Blue dust jacket over blue cloth. Binding remains firm. Pages are lightly tanned throughout. Tape marks to endpaper and pastedowns. Previous owner's inscription to front free endpaper. Boards have light shelf-wear with corner bumping. Very slight crushing to spine ends. Tape mark to rear board. Unclipped jacket has light edge wear with minor tears and chipping. Mild rubbing and marking.