1973. No Edition Remarks. 483 pages. No dust jacket. Blue cloth with gilt lettering. Black and white graphs and diagrams throughout. Volume 3. Light tanning to pages and text block edges Pen inscription to front free endpaper. Binding remains firm. Boards have minor corner bumping and edgewear. Spine has light tanning with soft crushing to ends. Lettering remains bright and clear. Book has a slight forward lean.