1937. First Edition. 368 pages. No dust jacket. Blue cloth with gilt titles to spine. Includes various diagrams. Pages have slight foxing, tanning and minor thumbing. Bookseller's sticker to front pastedown. Previous owner's inscription to front endpaper. Text block edges are a little tanned and foxed with minor scratches. Boards have some moderate edge wear, with slight bumping to corners and minor bumping to spine ends. Boards a little rubbed and marked overall. Sticker traces to spine. Spine is slightly sunned. Gilt is bright.