@PHDTHESIS {LANGWA:2019, title = {Sweet potato production in south Sudan: current status, virus infections and whitefly vector diversity}, author = {Langwa, B. C. M. }, year = {2019}, type = {Philosophiae Doctor (PhD) Thesis, Department of Plant Sciences, Faculty of Biosciences Norwegian University of Life Sciences}, school = {Norwegian University of Life Sciences}, address = {Norway, Europe}, note = {RTB; Sweet Potato; IITA supervisor; Dr. Legg, J.; Pdf can be access through KC staff Mgt. 190p.; ISBN: 978-82-575-1662-8}, }