por Mather, C. E.
por Galloway, William I | Clark, Welden E., coaut | E.U.A. National Research Council. Highway Research Board.
por National Research Council. Transportation Research Board (E-.U.A.).
por Scholes, W.E., coaut.Salvidge, A.C., coaut.Sargent, J.W., coaut.Fisk, D.J., coaut | Building Research Establishment (Inglaterra).
por Fisk, D.J | Building Research Establishment (Inglaterra).