Current progress in Chadic linguistics : proceedings of the International symposium on Chadic linguistics, Boulder, Colorado, 1-2 May, 1987 / ed. by Zygmunt Frajzyngier

Current progress in Chadic linguistics : proceedings of the International symposium on Chadic linguistics, Boulder, Colorado, 1-2 May, 1987 / ed. by Zygmunt Frajzyngier