1961. Third Edition. 515 pages. No dust jacket. This is an ex-Library book. Cloth covered boards. Ex-Library copy, with expected inserts, stamps and inscriptions. Pages remain clear with minimal tanning and foxing. Cracking to hinges, no damage to end papers. Some occasional mild cracking to gutters throughout, binding remains reasonably firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Mild crushing to spine ends. Cloth is notably dust stained. Book has a slight forward lean.