1946. Second edition. 401 pages. No dust jacket. Blue cloth covered boards with gilt. Black and white photographs and diagrams. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. A previous owner's name to front free endpaper. Boards have light shelf wear with minor corner bumping and crushing to spine ends. All surfaces tanned and sunned, particularly spine. Gilt lettering to spine is slightly dulled.