1974. 7th Edition. 156 pages. Pictorial dust jacket over green cloth. Binding remains firm. Pages have light tanning and foxing throughout. Previous owner's inscription to front pastedown. Boards have light shelf-wear with corner bumping. Slight crushing to spine ends. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Light tanning and water staining to spine and edges. Foxing overall.