van Schalkwyk, Ockert Louis, Centre for Veterinary Wildlife Studies, University of Pretoria, Onderstepoort; Office of the State Veterinarian, Skukuza, South Africa

• Geospatial Health Vol. 11 No. 2 (2016) - Original Articles
  Heterogeneity in a communal cattle-farming system in a zone endemic for foot and mouth disease in South Africa
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