1962. Ninth Impression. 522 pages. Grey dust jacket over blue cloth boards with gilt lettering to spine. Black and white diagrams and illustrations throughout. Pages and binding are presentable with no major defects. Minor issues present such as mild crinkling and light tanning. Boards have mild edge wear with light rubbing and crushing. Some light marking and tanning. Boards are bowed. Book has a slight forward lean. Unclipped jacket has light edge wear with minor tears and chipping. Mild rubbing and marking. Tanning to spine and edges.