1964. First Edition. 139 pages. No dust jacket. Cream cloth. Contains black and white diagrams and illustrations. Pages remain bright and clear with minimal tanning and foxing. Stamp and pen inscription to front free endpaper. Moderate creasing to gutter. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Notable crushing to spine ends. Visible tanning to spine and edges. Tape residue to front board and spine. Black marks to rear board.