by Van der Schyff, J, Theron, P.D. (Christian Higher Education Univ., Potchefstroom (South Africa). Environmental Sciences and Development School), Ueckermann, E.A
Published in African plant protection (01.02.2003)

by Ueckermann, E.A., Van der Schyff, J., Theron, P.D.
Published in African plant protection (01.02.2004)

by Van der Schyff, J, Theron, P.D. (North-West Univ., Potchefstroom (South Africa). School of Environmental Sciences and Development), Ueckermann, E.A
Published in African plant protection (01.02.2004)

by Coetzee, Peter, van der Schyff, Jan
Published in Development southern Africa (Sandton, South Africa) (01.12.1999)

by Nieuwoudt , H., Steenkamp, A., Blignaut, L., Van der Schyff, J. & Faber, P.
Published in De rebus (01.08.1998)

by VAN DER SCHYFF J, CHEYNE D
Year of Publication 27.04.1977

by VAN DER SCHYFF J, ISAAC R, CHEYNE D
Year of Publication 27.04.1977