LINGO LIBRARY · 77071The exploration of Tibesti, Erdi, Borkou, and Ennedi in 1912-1917 : $b a mission entrusted to the author by the French Institute✳Tilho, JeanENThe exploration of Tibesti, Erdi, Borkou, and Ennedi in 1912-1917 : $b a mission entrusted to the author by the French InstituteTilho, Jean