1969. 15th Edition. 744 pages. Green dust jacket over red cloth. Binding remains firm. Pages are lightly tanned throughout. Boards have light shelf-wear with corner bumping. Light sunning to spine and edges with crushing to spine ends. Staining overall. Unclipped jacket has heavy edgewear with areas of loss, heavy tears, chips, and creasing. Light tanning to spine and edges. Wear marks overall.