1968. Fourth Printing. 465 pages. This is an ex-Library book. Illustrated dust jacket over blue cloth boards with lettering. Expected library inserts, stamps and inscriptions. Clean pages with light tanning to text block edges. Binding is firm throughout with minor thumb-marking. Pen markings to front free endpaper. Moderate tape marks to front free endpaper. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Slight crushing to spine ends. Lettering is bright and clear. Unclipped Jacket. Panels and spine have light edgewear with tears and creases. Moderate tanning and wear marks to flaps, panels and spine.