1964. 6th Edition. 330 pages. Green dust jacket over red cloth. Binding remains firm. Pages have light tanning and foxing throughout. Previous owner's inscription to title page. Boards have light shelf-wear with corner bumping. Slight crushing to spine ends. White mark to front board. Unclipped jacket has heavy edgewear with areas of loss, heavy tears, chips, and creasing. Light tanning to spine and edges. Water staining to spine. Wear marks and foxing overall.