1967. First Printing. 294 pages. Dust jacket over black cloth with gilt lettering. Black and white diagrams and illustrations throughout. Pages are bright and clear with light tanning to pastedowns and free endpapers. Pen inscription to front free endpaper. Binding remains firm. Boards have minor corner bumping and edgewear with subtle scuffing overall. Spine has mild sunning with soft crushing to ends. Lettering remains bright and clear. Book has a slight forward lean. Unclipped dust jacket with minor rubbing, chipping and tearing to edges. Some minor tanning, creasing and scuffing overall.