"Drenaje Superficial de Terrenos Llanos"United States. National Archives and Records AdministrationP124_Box3INF4 Inquiries31972-09-19letters (correspondence)TranslationARDOARDO Book ProgramSurface Drainage of FlatlandsflatlandsEscola Superior de Agricultura "Luiz de Queiroz" (E.S.A.L.Q.)Engelbert, Lincoln E.AddresseePickett, R. C.AddresseeArscott, T. G.AddresseeSmith, Lamar, 1947-AddresseeMatos, LigiaAddressee