[ نُشرت في: Arab Universities Journal of Agricultural Sciences ]
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[An analytical study of effects of tenure system on the yield of selected crops at Sharkia governorate [Egypt]]
1994
Ashry, A.K. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture)
Egyptian Documentation and Information Centre for Agriculture - Egypt
The role of biofertilizers in reducing agricultural costs, decreasing environmental pollution and raising crop yield
1993
El-Haddad, M.E. | Ishac, Y.Z. | Mostafa, M.I. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture)
Egyptian Documentation and Information Centre for Agriculture - Egypt