1969. 18th Edition. 288 pages. Pictorial dust jacket over blue cloth. Black and white photographs and illustrations throughout. 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 light rubbing and corner bumping. Some light marking and sunning. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Light tanning to spine and edges. Pen marking to rear flap. Wear marks and light foxing overall.