Valency patterns for bivalent verbs in two West African languages: Mandinka (Mande) and Jóola Banjal (Atlantic) Creissels Denis Bassène Alain-Christian 490 periodical academic journal Afrikanistik online 10 1 2013 1860-7462 urn:nbn:de:0009-10-37580 http://nbn-resolving.de/urn:nbn:de:0009-10-37580 creissels2013