1971. 5th edition. 420 pages. No dust jacket. Green cloth. Inscription to front endpaper. Pages are clean and bright with a firm binding. Endpapers and page edges are lightly tanned and foxed. 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.