* See for instance:
- "Opportunities and constraints for future development of sustainable vegetable seed businesses in Eastern and Southern Africa", a scooping study commissioned by the Rockefeller Foundation, the UK Department for International development Crop Protection Programme, and the Gatsby Charitable Foundation, by J.M. Lenne, D.A.C. Pink, J. Njuki, C. Wanyonyi & N.J. Spence.
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