1951. 12th Edition.. 1156 pages. No dust jacket. Beige half bound cloth and leather boards. Pages are moderately tanned and thumbed at the edges, with moderate foxing. Binding has remained firm. Boards have been moderately rub worn. Noticeable shelf wear to corners, spine and edges. Corners are bumped and a little frayed Spine ends are crushed, with noticeable splits and chips. Tanning to spine and edges. Boards are bowed. Book has a forward lean. Water marks to boards and spine.