1957. first published. 343 pages. No dust jacket. Red cloth with gilt lettering. Contains black and white illustrated diagrams. Binding remains firm.Pages remain bright with minimal tanning. More pronounced tanning and foxing to free end papers and pastedowns. Pencil inscription to front free end paper. Boards have light edge-wear with slight rubbing to surfaces and spine is presentable with minimal crushing and tanning. Gilt lettering is darkened.