1943. Fourth impression. 1128 pages. No dust jacket. Green cloth covered boards. Black and white photographs and diagrams. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Cracking to front hinge with netting exposed. Binding loose. Dedication to half-title page. Front free endpaper missing. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. All surfaces heavily tanned, particularly spine. Some additional moderate marks and staining.