مهندسیPhoto-engraving, Photo-etching and Photo-lithography in Line and Half-tone Also Collotype and HeliotypeW. T. Wilkinson
مهندسیTri-nitro-glycerine, as Applied in the Hoosac Tunnel, Submarine Blasting, etc., etc., etc.George M. Mowbray
ریاضیاتOn the History of Gunter's Scale and the Slide Rule During the Seventeenth CenturyFlorian Cajori
