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Incentives or obstacles? : institutional aspects of the cork business in the Iberian Peninsula (1930 - 1975)
Branco, Amélia, (2008)
Modelo econométrico do sector da cortica
Guerreiro, Jorge, (1983)
The cork oak forests and the evolution of the cork industry in Southern Spain and Portugal
Parsons, James J., (1962)
Official list of exporters : liste officielle des exportateurs ; Amtliches Verzeichnis der Exporteure ; Lista ufficiale degli esportatori
(1959)
Exportação da cortiça portuguesa
(1951)
Das portugiesische Korkholz =The Portuguese cork
Vieira Natividade, J., (1938)