1966. First Printing. 224 pages. Paperback book with pictorial paper covers. Green dyed textblock edges. Black and white graphs and maps 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. Paper cover has mild edge-wear with light rubbing and creasing. Some light marking and sunning.