Coetzer, Jacobus A.W.; Barnard, B.J.H.; De Kock, V.E.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B.
(Pretoria : The Government Printer, 1977)
During the 1974/75 lambing season numerous reports were received from various parts of the
Republic of South Africa and South West Africa of severe abdominal distension in ewes after
vaccination with the attenuated Rift ...