Reference Base Serological evidence of Cowdria ruminantium infection in ...
Kock, N.D.; Jongejan, F.; Kock, M.D.; Kock, R.A.; Morkel, P., 1992. Serological evidence of Cowdria ruminantium infection in free-ranging black (Diceros bicornis) and white (Ceratotherium simum) rhinoceroses in Zimbabwe. Journal of Zoo and Wildlife Medicine 23 (4): 409-413, table 1