1946. 18th Edition. 233 pages. Cream dust jacket over green cloth. Binding remains firm. Pages have light tanning and foxing throughout. Water staining to some pages, text remains unaffected. Boards have light shelf-wear with corner bumping. Light tanning to spine and edges with crushing to spine ends. Water staining to rear board. Unclipped jacket has heavy edgewear with areas of loss, heavy tears, chips, and creasing. Light tanning to spine and edges. Water staining to rear panel.