Journal Article Drought-tolerant Cassava for Africa, Asia, and Latin America: Breeding projects work to stabilize productivity without increasing pressures on limited natural resources Get access Mabrouk A. El-Sharkawy Mabrouk A. El-Sharkawy Search for other works by this author on: Oxford Academic Google Scholar BioScience, Volume 43, Issue 7, July/August 1993, Pages 441–451, https://doi.org/10.2307/1311903 Published: 01 August 1993