1977. No edition remarks. 645 pages. Paperback book with beige cover. Pages are bright and clear. Mild cracking to hinges, however binding remains firm. Previous owner's inscription to first page. Mild thumb-marking present. red pencil to p.645. Paper cover has mild edge wear with mild corner curling. Moderate tanning to spine, and mild sunning to cover edges. Moderate water stains to rear board. Light rubbing all over.