1967. Second revised edition. 410 pages. Illustrated dust jacket over blue cloth with gilt. Includes maps and tables. Binding remains firm. Pages remain bright and clear with minimal tanning and foxing, heavier to text block edges and paste-downs. Boards have mild edge-wear with slight rubbing to surfaces. Gilt lettering is bright and clear. Mild crushing to spine ends. Minor fraying to cloth at spine ends. Top edge of text block is dust marked. Unclipped jacket has light edge-wear with tears and creasing.