1967. Second Edition, Reprinted. 140 pages. No dust jacket. Black cloth covered boards with silver lettering. Pages remain clear with minimal tanning and foxing. Thumb marking to front free end paper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends. Silver lettering is bright and clear. Boards have minor damp and dust stains. Book has a slight forward lean.