Columbia subject headings:
Harvard subject headings:
Africa, French-speaking Equatorial--Discovery and exploration.
Brazza, Pierre Savorgnan de, 1852-1905.
Ogooué River (Gabon)
Princeton subject headings:
Africa, French-speaking Equatorial--Discovery and exploration.
Brazza, Pierre Savorgnan de, 1852-1905.
Ogooué River (Gabon)