1959. 7th Edition. 2nd Impression. 560 pages. No dust jacket. Blue cloth. Inscription to front endpaper. Pages are clean and bright, and appear almost good as new. With minimal tanning throughout. Binding has remained firm. Boards are a little rub worn, slight shelf wear to corners, spine and edges. Corners are a little bumped. Spine ends are mildly crushed. Tanning to spine and edges. Boards are bowed. Book has a forward lean. Water marks to boards and spine.