Empresa Brasileira de Planejamento de Transportes; Brazilian Transportation Planning Agency; International Bank for Reconstruction and Development; Texas Research and Development Foundation; GEIPOT; DNER; Brazil. Departamento Nacional de Estradas de Rodagem; United Nations Development Programme; UNDP; Goiás (Brazil : State). Departamento de Estradas de Rodagem; DER-GO; Minas Gerais (Brazil). Departamento de Estradas de Rodagem; DERMG; World Bank; IBRD; TRDF(Empresa Brasileira de Planejamento de Transportes ; United Nations Development Programe, 1981)
De Jong, Robert Cornelis; Ploeger, Jan; Coetzee, N.A.; Van den Heever, C.M. (Christiaan Maurits), 1902-1957; De Jong, C.; Davey, A.M. (Arthur M.), 1921-1999; Boutens, P.C.(Association Old Pretoria, 1987-11)