Fourth Edition. 622 pages. Brown paper covers. Loose documents in sleeve at rear cover. Black and white photographic plates and illustrated maps and graphs. Light tanning to pages. More prominent to text block edges and reverse of covers. Pen inscription to title page. Light cracking to gutters and hinges but binding remains firm. Paper covers have light edge-wear and corner curling with moderate tanning and scuffing overall. Spine has moderate tanning, rolling and creasing. Book has a slight forward lean.