1969. Second Revised Edition. 215 pages. This is an ex-Library book. Yellow dust jacket over green cloth. Expected library inserts, stamps and inscriptions. Jacket is in plastic wrapper and has been taped to boards. Pages are lightly tanned and foxed throughout. Light thumb-marking present. Scuffed paper remnants to front free endpaper. Binding remains firm. Light staining to text-block edges. Boards have mild edge wear with slight rubbing to surfaces. Soft crushing to spine ends. Tape to board edges. Unclipped jacket has light edge wear with chips, tears and creasing. Jacket is in plastic wrapper. Mild sunning to spine and edges. Library stickers to spine.