1967. 440 pages. No dust jacket. Beige cloth. Book has a slightly pungent odour. Black and white photographic plates and graphs throughout. Moderate foxing and tanning to pages; heavier tanning to text block edges. Binding remains firm. Boards have minor corner bumping and edgewear with moderate tanning, staining and scuffing overall. Spine has moderate tanning with soft crushing to ends. Book has a slight forward lean.