Napels I | Overeenkomst tussen België, de Bondsrepubliek Duitsland, Frankrijk, Italië, Luxemburg en Nederland inzake wederzijdse bijstand tussen de onderscheiden douaneadministraties | Overeenkomst van Napels
Convention between Belgium, the Federal Republic of Germany, France, Italy, Luxembourg and the Netherlands on Assistance between Customs Administrations | Convention between Belgium, the Federal Republic of Germany, France, Italy, Luxembourg and the Netherlands on the Provision of Mutual Assistance by their Customs Authorities | Naples I