Twenty-Sixth Edition. 168 pages. Paperback book with red and black cover. Black and white illustrations throughout. Clean pages with noticeable tanning throughout. Tightly bound with faint thumb-marking throughout. Notable water mark to reverse of front cover and first page. Pencil mark to last page. Paper cover has mild edge wear with mild corner curling. Notable creasing to covers. Moderate tanning to spine and to cover edges. Mild water stains to front cover. Mild scratching and marking to covers.