23rd Edition. 713 pages. No dust jacket. Red cloth with gilt lettering. 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.