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1Digital revistaSCIELO
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2by Collins, N.E., Liebenberg, J., Villiers, Etienne P. de, Brayton, K.A., Louw, E., Pretorius, A., Faber, F.E., Heerden, H. van, Josemans, A., Kleef, M. van, Steyn, H.C., Strijp, M.F. van, Zweygarth, E., Jongejan, F., Maillard, J.C., Berthier, D., Botha, M., Joubert, F., Corton, C.H., Thomson, N.R., Allsopp, M.T., Allsopp, B.A.
Published 2005-01-18Journal Article bibliotecaCGIAR