Otto, Q.T.; Jordaan, Leonora C.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)
Some flocks of sheep in the Amersfoort district of Transvaal Province developed orf-like lesions,
commencing between December and April. The causative agent was identified as a new species of mite belonging to the genus ...