1961. New (Sixth) Edition. 559 pages. This is an ex-Library book. Dust jacket covered in removable plastic wrapper over red cloth. Library copy, with expected stamping. Bright and clean pages with light tanning to text block edges. Binding is firm throughout with minor thumb-marking. Heavy tape staining to rear pastedown and endpaper. Previous owner's inscription to front endpaper. Boards are assumed in good condition as are covered with taped on jacket. Unclipped jacket has light edgewear with tears and creasing. Moderate tanning to spine. Notable rubbing and marking all over. Library sticker to spine.