23rd Edition. 342 pages. No dust jacket. Green cloth. Slight cracking to hinges, with exposed netting, pages remain attached. Pages are lightly tanned throughout. Tears to some pages, text remains unaffected. Previous owner's inscription and paper worn away to. Boards have moderate shelf-wear with bumping to corners and rubbing to surfaces. Light tanning to spine and edges with crushing to spine ends. Splits to spine ends causing cloth to be frayed. Water staining to spine and front board.