1963. Twenty-Third Impression. 414 pages. No dust jacket. This is an ex-Library book. Blue cloth boards with gilt lettering. Expected library inserts, stamps and inscriptions. Moderate crinkling to paper at gutter. Clean pages with noticeable tanning and foxing throughout. Tightly bound with faint thumb marking throughout. Pencil and pen markings to front free endpaper and back pastedown. Boards have heavy edge-wear with bumping to corners, crushing to spine ends and rub wear all over. Slight crushing to spine ends. Gilt lettering is darkened. Heavy sunning to spine and edges. Visible wear marks to boards.