1951. Revised Edition. 160 pages. No dust jacket. This is an ex-Library book. Black cloth with gilt. Ex-Library copy, with expected inserts, stamps and inscriptions. Pages remain clear with minimal tanning and foxing. End papers are more notably tanned. 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 is bright and clear. Book has a slight forward lean. Cloth has minor damp and dust stains.