1968. 652 pages. Green patterned dust jacket over black cloth. vol.4. Pages are clean and bright with a firm binding. Endpapers and page edges are lightly tanned and foxed. Boards are a little rub worn with slight shelf wear to corners, spine and edges. Corners are a little bumped and spine ends are a mildly crushed. Light wear to unclipped dust jacket with tears, nicks and creases to spine, edge and corners. Tanning to spine and edges.