The changing world of travel marketing : Vth International Travel Research Seminar - Nassau (Bahamas), June 1971 / IUOTO - International Union of Official Travel Organization
COTA(S): 22; 22-a
Audiência dos meios de difusão em Portugal / Oliveira e Castro
COTA(S): 17449
aTourisme : Rapport des commissions du 6e plan 1971 - 1975 / Commissariat Général du Plan/Préparation du 6º Plan
COTA(S): 1025