Lawson Soulsby Andrew F. Trawford Jacqui. B. Matthews Aline S. de Aluja Phillipe Dorchies Feseha Gebreab L. J. Pangui R. C. Krecek Journal Veterinary Parasitology Volume 125 Issue 1-2 Start page 43 End page 58 Publication date 30 September 2004 Keywords donkey