LIBROS DEL AUTOR: omar adam gumaa yahia

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  • Contribution of some tree fruits to rural development in Sudan
    Omar Adam Gumaa Yahia
    Trade of non timber forest products (NTFPs) for income generation is not new, some products (e.g. rattan, shea butter, rubber, gum Arabic, etc...), have been traded for centuries. The expansion of NTFPs market reflects a growing recognition of the contribution made by many NTFPs to rural economies. However, recent reviews suggest that studies on NTFPs may have been unduly optim...
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