Everything you ever wanted to know about sweetpotato: Reaching agents of change ToT manual. 3: Sweetpotato seed systems - Stathers, T.; McEwan, M.; Gibson, R.; Mwanga, Robert O.M.; Carey, E.E.; Namanda, S.; Abidin, P.E.; Low, Jan W.; Malinga, J.; Agili, S.; Andrade, M.I.; Mkumbira, J. (International Potato Center, 2013)