1960. New impression. 148 pages. No dust jacket. Red cloth covered boards with gilt. Black and white diagrams throughout. Pages remain bright and clean with minimal tanning and foxing. Some cracking to gutters with exposed netting. Binding loose. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. Gilt lettering to spine is slightly dulled. Some moderate marks and staining to surfaces. Boards are slightly bowed.