por Beard, Leo R. coaut | .A.) | Army Corps of Engineers, Hydrologic Engineering Center (E.U-.
por Duren, Fred K | Beard, Leo R., coaut | E.U.A. Army Corps of Engineers, Hydrologic Engineering C.
por Fredrich, Augustine J | Beard, Leo R. , coaut | E.U.A. Army of Engineers, Hydrologic Engineering C.
por Lewis, David C | Beard, Leo R., coaut | E.U.A. Army Corps of Engineers, Hydrologic Engineering C.