No Edition Remarks. 156 pages. No dust jacket. Green cloth covered boards. Black and white photographs and diagrams. Black and white frontispiece. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Frontispiece detaching. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. All surfaces moderately tanned. Gilt lettering remains bright and clear. Some additional marks and staining to surfaces.