Straight and Crooked Thinking by Robert H. Thouless
1960. Fourth Printing. 189 pages. Blue paper cover. Pages are lightly tanned and foxed throughout. Occasional thumb-marking present. Light scuffing to text-block edges. Paper cover has mild edge wear with scuffing to edges and creasing. Light tanning to spine and edges. Mild rubbing to surfaces with curling to corners. Some scuffed loss to front cover.