Barnard, B.J.H.; Griessel, M.D.; Van de Pypekamp, H.E.; Verwoerd, Daniel Wynand
(Published by the Government Printer, Pretoria., 1989)
The investigation involved 37 herds of cattle numbering 6 280 animals and 5 groups of blue wildebeest (Connochaetes taurinus), consisting of 30-330 wildebeest per group. All the cases of wildebeest-derived malignant catarrhal ...