1958. Second Revised Edition. 192 pages. Blue dust jacket over green cloth. Pages remain bright and clear with minimal tanning and foxing. Thumb-marking present. Light creasing to gutter. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Soft crushing to spine ends. Light tanning to spine and edges. Minor marks to boards. Clipped jacket has moderate edgewear with chips, tears and creasing. Visible tanning to spine. Brown marks to panels.