1961. 3rd Edition. 236 pages. Green jacket over blue cloth. Pages are lightly tanned and thumbed at the edges, with light foxing. 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. Light tanning to spine and edges. Prominent forward lean to text block. Light wear to clipped dust jacket with tears, nicks and creases to spine, edge and corners. Moderate tanning to spine and edges.