1964. Revised Edition. 96 pages. Blue dust jacket with white lettering over blue cloth. B&W frontispiece. Clean pages with firm binding. Minimal tanning to endpapers and page edges. Mild wear to spine, board edges and corners, with sunning to spine and board edges. Unclipped dust jacket. Mild wear, tear and chipping to edges and corners. Moderate sunning to spine, with minor staining and soiling to DJ.