1952. Ninth Edition. 416 pages. No dust jacket. Green cloth boards with lettering. Slight crinkling to gutters. Pages remain clear with minimal tanning and foxing. Binding is slightly loose. Minor loss to front free endpaper. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Lettering is bright and clear. Slight crushing to spine ends. Book has a slight forward lean.