Longman dictionary of contemporary english
Portugais-Français : abrégé du grand dictionnaire de Domingos de Azevedo / par Jean Rousé et Ersílio Cardoso
Dicionário de terminologia energética / Conselho Mundial de Energia
Atlas of new Europe : history, communications, business, finance politics, international relations, war and defence environment, people and culture / ed. The Economist Books