by Cloete, S.W.P. (Elsenburg Agricultural Centre, (South Africa)), Van Niekerk, F.E, Young, M, Van der Merwe, G.D, Clark, J
Published in Journal of the South African Veterinary Association (01.09.1999)

by Cloete, S.W.P. (Elsenburg Agricultural Centre, Elsenburg, South Africa.), Van Niekerk, F.E, Rust, J.M
Published in Sheep and goat research journal (USA) (1998)