M. Y. Shalaby, K. H. Al-Zahrani, M. B. Baig, G. S. Straquadine, and F. Aldosari. "THREATS AND CHALLENGES TO SUSTAINABLE AGRICULTURE AND RURAL DEVELOPMENT IN EGYPT: IMPLICATIONS FOR AGRICULTURAL EXTENSION." Journal of Animal and Plant Sciences, vol. 21, no. 3, 2011, pp. 581-588.