1961. Reprinted Third Edition. 256 pages. Illustrated dust jacket over red cloth covered boards. Pages remain clear with minimal tanning and foxing, mild to end-papers and text-block edges. Some occasional mild cracking to gutters throughout however binding remains reasonably firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Mild crushing to spine ends. Book has a moderate forward lean. Clipped jacket has light edge-wear with tears and creasing. Staining to rear panel.