29 May 1979 | Publisher: Economic Community of West African States (ECOWAS) | Document type: Multilateral Treaties/Agreements
28 May 1975 | Publisher: Economic Community of West African States (ECOWAS) | Document type: Multilateral Treaties/Agreements
3 August 1971 | Publisher: UN Security Council | Document type: Resolutions/Recommendations/Declarations
8 December 1970 | Publisher: UN Security Council | Document type: Resolutions/Recommendations/Declarations
22 December 1969 | Publisher: UN Security Council | Document type: Resolutions/Recommendations/Declarations