1967. 6th Edition. 272 pages. No dust jacket. Blue cloth with white lettering. 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 moderate shelf wear, with rubbing and marking. Light bumping to corners and crushing to spine ends. Binding remains firm. Boards are slightly bowed.