1963. Sixth Edition. 119 pages. No dust jacket. Blue cloth with gilt lettering. Clean pages with mild tanning and foxing throughout. Tightly bound with visible thumb-marking throughout. Boards have light shelf-wear with corner bumping. Mild tanning to spine and board edges. Mild crushing to spine ends. Notable scratching and marking to boards. Moderate water stains to boards. Book has forward lean. Boards are mildly warped.