1961. No Edition Remarks. 344 pages. Blue dust jacket over blue cloth. Contains black and white diagrams throughout. Pages remain bright and clear with minimal tanning and foxing. Heavier tanning to front and rear free endpapers. Pen inscription to front free endpaper. Moderate creasing to gutter. Boards have mild edge-wear with slight rubbing to surfaces. Light bumping to corners. Notable crushing to spine ends. Visible tanning to spine and edges. White mark to rear board. Textblock is shaky. Clipped jacket has light edgewear with tears and creasing. Visible rubbing to surfaces. Red mark to rear panel. Light tanning to spine and rear panel.