n Vergelykende ondersoek na die effektiwiteit van verskillende konvensionele en minimum grondbewerkingspraktyke in die wingerdbou ten opsigte van grondvogbewaring en ander fisiese eienskappe

Van Huyssteen, Leopoldt (1977)

Proefskrif (M. Sc. Agric.) -- Universiteit van Stellenbosch, 1977.

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Thesis

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