627 Wl Williams, Gardner Stewart, 1866-1931. Hydraulic tables, the elements of gagings and the friction of water flowing in pipes aqueducts, serves etc. as determined by the Hazen and Williams formula and the flow of water over sharp-edged and irregular weirs, and the quantity discharged as determined, by Bazin's formula and experimental investigations upon large models, by Gardner S. Williams and Allen Hazen, 2d, rev,.and larged. New York, John Wiley, 1914. (Continúa Ficha 2)