Home › Authors › Carl F. Hoffmann 👤 Carl F. Hoffmann b. 1925 ยท 2 books Books by Carl F. Hoffmann Festschrift zum 60. Geburtstag von Carl F. Hoffmann 1986 The vowel harmony system of th The vowel harmony system of the Okpe monosyllabic verb, or, Okpe--a nine-vowel language with only seven vowels 1970