C. J. Rooyen
发表
Access to the agricultural market for small farmers in Southern Africa: The farmer support programme
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1986
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C. J. Rooyen,
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C. J. Rooyen,
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H. D. Schalkwyk,
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C. J. Rooyen,
S. Nene,
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S. Nene,
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P. Anandajayasekeram,
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