1957. Fourth impression. 470 pages. No dust jacket. Red cloth covered boards with silver gilt. Black and white diagrams 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 moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. All surfaces tanned and sunned, particularly spine. Some additional moderate marks and staining.