1947. Reprinted. 239 pages. No dust jacket. Green cloth with gilt lettering to spine. Black and white photographic plates throughout with similar frontispiece. Black and white diagrams. Pages with some tanning and foxing, particularly to textblock edges and endpapers. Heavy annotations to endpapers. Boards have heavy shelf wear with bumping and fraying to corners, crushing to spine ends and rubbing and staining all over. Spine heavily tanned. Gilt lettering is dulled.