Botha, C.J. (Christoffel Jacobus); Schultz, R.A. (Rowena Anitra); Van der Lugt, Jaco J.; Retief, E.; Labuschagne, Leonie(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)
Schultz, R.A. (Rowena Anitra); Fourie, Niel; Basson, Karin M.; Labuschagne, Leonie(Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2001)
Snyman, Leendert D.; Schultz, R.A. (Rowena Anitra); Joubert, J.P.J.; Basson, Karin M.; Labuschagne, Leonie(Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2003)
Snyman, Leendert D.; Schultz, R.A. (Rowena Anitra); Kellerman, T. Stephanus; Labuschagne, Leonie(Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2002)