18 December 1990 | Publisher: UN General Assembly | Document type: Multilateral Treaties/Agreements
19 June 1990 | Publisher: European Union | Document type: Multilateral Treaties/Agreements
14 June 1985 | Publisher: European Union | Document type: Multilateral Treaties/Agreements
25 February 1981 | Publisher: Organization of American States (OAS) | Document type: Multilateral Treaties/Agreements
3 September 1960 | Publisher: Council of Europe | Document type: Multilateral Treaties/Agreements
13 December 1957 | Publisher: Council of Europe | Document type: Multilateral Treaties/Agreements