1942. Reprinted. 500 pages. No dust jacket. Green cloth covered boards with gilt. Black and white diagrams throughout. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. A previous owner's name to front free endpaper. Boards have mild shelf wear with light rubbing and corner bumping. Some moderate marking and sunning. Gilt lettering to spine is slightly dulled but remains brighter on front.