1. Studies on nitrogen-fixing bacteria Rhizobium leguminosarum;Abd-El-Maksoud;Ph. D. Thesis, Fac. Agric. Cairo Univ.,1978
2. Problems of micronutrients in plant nutrition under Egyptian soil conditions;Ashour,1974
3. Note on the effect of foliar application with micronutrients and growth regulators on growth, amylase and invertase activity of Vicia faba;Ashour;Egypt. J. Physiol. Sci.,1974
4. A preliminary study on Fritted Trace Element (FTE) as a fertilizer for pea plants (Phaseolus vulgaris) grown in calcareous soil;Ashour,1972
5. Yield response of some leguminous crops to seed treatments with Mo, Zn and Co combined with nodule bacteria in sandy soils;Ashour;Trop. Subtrop. Landwirt, u. Tropenvet. Med.,1974