Here is a partial list of the ethnic groups of Gabon by province.
Estuaire Haut Ogooué Moyen Ogooué Ngounié
Ogooué-Ivindo
Ogooué-Lolo Ogooué-Maritime Woleu Ntem
... (soft palate[?]) (k, kh, g, gh, n as in ing) Palatal (hard palate[?]) (c, ch, j, jh, ~n) Retroflex[?] (roughly the place of articulation of English alveolars like t, but ...