1970. First Edition. 151 pages. No dust jacket. This is an ex-Library book. Purple cloth with silver lettering. Ex-Library copy, with expected inserts, stamps and inscriptions. Pages remain clear with minimal tanning and foxing. Cracking to hinges, no damage to end papers. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends. Silver lettering has become dull. Book has a slight forward lean.