Jefes de Estado y Gobierno. Declaration of Addis Ababa to the Heads of State and Government on the 25th Anniversary of the Organisation of African Unity. RMPE [Internet]. 1988 Dec. 1 [cited 2024 May 18];(21):52-6. Available from: https://revistadigital.sre.gob.mx/index.php/rmpe/article/view/2040