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Bosch, 1998

Chweya, 1997, Promoting the conservation and use of underutilized and neglected crops

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FAO, 1996

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Netshiluvhi MM (pers. comm.) Miluwani Village, Sibasa (Thohoyandou), Venda, Limpopo Province.

Schippers, 2000

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Shackleton, 2002, The contribution of natural woodlands and forests to national income and economic welfare

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Wambugu, 2001, Modifying Africa