1966. Second Impression. 198 pages. No dust jacket. Blue cloth. Contains black and white diagrams throughout. Pages are lightly tanned, but text remains clear. Binding is firm. Previous owner's inscription to front free endpaper. Boards have light shelf-wear, with minor corner bumping and minimal scuffing to edges. Noticeable splitting to tail of spine. Moderate rubbing and scuffing overall, with some noticeable marking also. Label to front board. Boards are noticeably bowed.