found: Gurtong WWW site, Sept. 1, 2011:(Uduk: used to inhabit the Ahmar, Tombak and Yabus valleys in northeastern Upper Nile and southern Blue Nile)
found: Joshua project WWW site, Sept. 1, 2011:(Uduk: a people of Sudan [i.e., South Sudan and Sudan]; region: North, Upper Nile Province from Belila north, south along Blue Nile Province boundary to Yabus River)
found: Ethnologue WWW site, Sept. 1, 2011:(Uduk: a language of Ethiopia and Sudan [i.e., Sudan and South Sudan]; region in Sudan: North, Upper Nile Province from Belila north, south along Blue Nile Province boundary to Yabus River)
