1929. 7th Edition 11th Imp. 528 pages. No dust jacket. Green cloth. Parts I-II. Black and white illustrations throughout. Pages are mostly clean overall, with moderate tanning throughout. Front free endpaper removed. Slight crinkling to paper at gutters, however binding remains firm. Illustrations are bright and clear, with some light tanning and foxing to edges. Occasional thumb-marking. Boards have visible edge wear with corner bumping. Fraying to spine edges. Water marks to front board. Book has a slight forward lean.