A Grammar of Obolo ìre ikpa usọ usem eyi tele Nikolas Faraclas ogebe me acha 198x isa ikpa iwele ike usem Obolo okupbe, igọọk me ubọk iwọlọ-usem ebi usọ usem. Ikpa yi ore adasi ikpa eyi ogwu usọ usem ogebe ibak usem Obolo.
A Grammar of Obolo ìre ikpa usọ usem eyi tele Nikolas Faraclas ogebe me acha 198x isa ikpa iwele ike usem Obolo okupbe, igọọk me ubọk iwọlọ-usem ebi usọ usem. Ikpa yi ore adasi ikpa eyi ogwu usọ usem ogebe ibak usem Obolo.