Aveling, Terry A.S.2013-09-062005-05-182013-09-062004-04-202006-05-182005-04-29a 2003 H94/thhttp://hdl.handle.net/2263/24205Dissertation (Magister Istitutiones Agrariae)--University of Pretoria, 2006.Please read the abstract in the section 00front of this document© University of Pretoria 2003 H 94/Sweet potatoes diseases and pests south africaVirus diseases of plants south africaPlant viruses south africaUCTDSurvey and characterisation of sweet potato viruses in South AfricaDissertationhttp://upetd.up.ac.za/thesis/available/etd-04292005-132647/