1951. 2nd edition. 917 pages. No dust jacket. Black cloth with gilt titles to spine. Volume IV. Fold-out parts. Upper text block edge red. Pages and binding are presentable with no major defects. Minor issues present such as mild cracking, inscriptions, inserts, light foxing, tanning and thumb marking. Overall a good condition item. Boards have mild shelf wear with rubbing and corner bumping. Some light marking and sunning.