1. Molony , Barbara . 1990.Technology and Investment: The Prewar Japanese Chemical Industry, 226–233. Cambridge, Mass.: Council on East Asian Studies, Harvard University.
2. Barnhart , Michael A. 1987.Japan Prepares for Total War130–130. Ithaca, N.Y. 156, 166, 180, 190, 196, 255–6. Embargoed materials included aircraft, machine tools, scrap iron, steel, aluminium, nickel, copper, zinc, vanadium, manganese, and tungsten. The embargo on lead tetraethyl, crude oil, and aviation gasoline (87-octane and higher) began in late July 1940.