1968. Fourth Impression. 339 pages. Paperback book with pictorial cover. Clean pages with mild tanning and foxing throughout. Tightly bound with faint thumb-marking throughout. Previous owner's inscription to first and last page. Heavy foxing to text block edges. Paper cover has mild edge wear with mild corner curling. Notable creasing to covers and spine. Mild sunning to spine. Notable foxing. Ring marks to front cover.