1965. 18th Printing. 189 pages. Illustrated paper cover. X237 edition with unabridged textblock. 3'6 price on front cover. Clean pages with noticeable tanning and foxing throughout. Pen marking to top edge textblock. Binding remains firm. Paper covers have moderate edge-wear with slight rubbing to surfaces and curling to corners. Moderate splits to spine ends and corners. Visible wear marks to covers.