1961. Fourth Edition. 118 pages. Dust jacket over green cloth. Clean pages with mild tanning throughout, heavy tanning to rear endpaper. Tightly bound with faint thumb-marking throughout. Previous owner's inscription to front endpaper. Boards have light shelf-wear with corner bumping. Mild tanning to spine and board edges. Mild crushing to spine ends. Mild water stains to rear board. Book has forward lean. Boards are notably warped. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Moderate water staining to panels. Tape stain to front flap. Mild tanning to spine. Notable scuffing to front and spine.