Production trials involving use of the FAMACHA© system for haemonchosis in sheep : preliminary results

by J.A. Van Wyk
Published 2008-09-01

Correspondence : a critique : to the editor

by J.A. Van Wyk, C.M.E. McCrindle
Published 1997-07-01

Little anthelmintic drenching required for lambs finished over winter and spring on annually re-established irrigated pasture on the Highveld of Gauteng province, South Africa

by J.A. Van Wyk, J. Meyer, L.J. Van Rensburg
Published 2003-06-01

Die gevaar van wye verspreiping van weerstandbiedendheid teen wurmmiddels deur veldramprestasietoetssentra

by J. A. van Wyk, P. C. van Schalkwyk, G. F. Bath, H. M. Gerber, Regina M.R. Alves
Published 1991-12-01

Alternativas para o controle de nematoides gastrintestinais de pequenos ruminantes

by M.B. Molento, C.J. Veríssimo, A.T. Amarante, J.A. van Wyk, A.C.S. Chagas, J.V. de Araújo, F.A. Borges