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'n Morfologiese studie van die genus Acacia Miller in Suid-Afrika
(University of the Free State, 1971-07)
English: The genus Acacia is an extensive one with representatives in Africa, America, Asia and Australia. When Bentham revised the subfamily Mimosoideae in 1875 he divided the taxon into six subgenera. All the South ...
Studies on the survival of Verticillium dahliae in soil
(University of the Free State, 1979-12)
Various aspects concerning the survival of Verticillium dahliae Kleb. in soil, in the field, green-house, and laboratory were studied. 'With biological control in mind, attention was paid to factors affecting antagonists ...