Reference Base Retrospective evaluation of Leptospirosis in free-ranging...
Jessup, D.A.; Miller, R.E.; Bolin, C.A.; Kock, M.D.; Morkel, P., 1992. Retrospective evaluation of Leptospirosis in free-ranging and captive black rhinoceroses (Diceros bicornis) by microscopic agglutination titers and fluorescent antibody testing. Journal of Zoo and Wildlife Medicine 23 (4): 401-408, fig. 1, tables 1-2