Columbia subject headings:
Mbaï (African people)--Chad.
Ngabou Doul, Tatola, 1886-
Harvard subject headings:
Mbaï (African people)--Chad.
Ngabou Doul, Tatola, 1886-
Princeton subject headings:
Mbaï (African people)--Chad.
Ngabou Doul, Tatola, b. 1886.