Though not claiming to be definitive, this is a rare and important publication on Juba Arabic, sometimes known as Creole Arabic, a language spoken in the Juba region of southern Sudan, and used more widely as a tool of communication in the towns and villages of the Equatoria region, in the Bahr al Ghazal and Upper Nile regions, as well as by a considerable number of refugees originating in the area, who have left for other countries. Juba Arabic is not a standardised or uniform language - necessarily creating problems in determining the criteria for inclusion of items in the dictionary. It is therefore an important work incorporating formal research into the language.