Parallel Grammar Documentation in Four Talodi Languages Russel Norton Africa African Studies African languages Sudan Talodi languages 490 periodical academic journal Afrikanistik-Aegyptologie-Online 2018 1 2018 1860-7462 urn:nbn:de:0009-10-48877 http://nbn-resolving.de/urn:nbn:de:0009-10-48877 russel2018