Fourth Edition, Revised . 178 pages. No dust jacket. This is an ex-Library book. Decorated green cloth covered boards with gilt. Library copy, with expected inserts and inscriptions. Pages have mild tanning and foxing throughout, moderate at end-papers, paste-downs and text-block edges. Minor pencil marking to free end-paper. Some occasional mild cracking to gutters throughout, binding is shaky. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Mild crushing to spine ends. Book has a slight forward lean. Gilt lettering is bright and clear. Cloth has minor damp and dust stains.