Topics in Chadic linguistics, Bd. 4: Papers from the 3rd Biennial International Colloquium on the Chadic Languages, Villejuif, November 24 - 25, 2005 Henry Tourneux; Dymitr Ibriszimow; Roberto Ajello; Ari Awagana; Roger M. Blench; Raymond Boyd; Doris Löhr; Joy Naomi Ruff and H. Ekkehard Wolff