1952. Fourth Edition, Revised. 146 pages. No dust jacket. Blue cloth covered boards with gilt. Pages are moderately tanned and occasionally foxed throughout. End papers are more notably foxed. Previous owner's inscription to front free end-paper. Cracking to hinges, no damage to end papers. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends. Gilt lettering has become dull. Cloth has minor damp and dust stains. Book has a slight forward lean.