قبائل موريتانيا سنة 1950 https://www.google.com/url?sa=t&source=web&rct=j&url=https://ireda.ceped.org/inventaire/ressources/mrt-1950-rad-o_tribus_chefs_population.pdf&ved=2ahUKEwiFh9iduYf6AhVZ7LsIHZGNCWkQFnoECAoQAQ&usg=AOvVaw1aHHGtEgWGM1hdvwNpcObs
