1951. 7th Edition. 248 pages. Pictorial dust jacket over red cloth. Binding remains firm. Pages have light tanning and foxing throughout. Pencil inscription to front free endpaper. Minor dog-eared corners. Small tears to some page edges, text remains unaffected. Boards have light shelf-wear with corner bumping. Slight crushing to spine ends. Unclipped jacket has light edgewear with chips and creasing. Light tanning to spine and edges. Water staining to spine.