1. The carrier status of sheep, cattle and African buffalo recovered from heartwater;Andrew;Vet. Parasitol.,1989
2. The development of a new heartwater vaccine, using Amblyomma hebraeum nymphis infected with Cowdira ruminantium;Bezuidenhout,1981
3. The present state of Cowdria ruminantium cultivation in cell lines;Bezuidenhout;Onderstepoort J. Vet. Res.,1987
4. In vitro culture of Cowdria ruminantium;Bezuidenhout;Onderstepoort J. Vet. Res.,1985
5. Susceptibility of white tailed deer to experimental heartwater infections;Dardiri;J. Wildl. Dis.,1987