Incidence of sweet potato viruses in the coastal savannah agro-ecological zone of Ghana. - Sossah, F.L.; Appiah, A.S.; Oduro, V.; Amoatey, H.M.; Owusu, G.K.; Oppong, A.; Lamptey, J.N.L.; Carey, E.E.; Fuentes, S. (Springer, 2015)