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	1.	No cover image available Response of wheat-maize yields and their nutrients status to the application of natural minerals under conditions of both organic manuring and biofertilization [electronic resources]. by El-Etr, Wafaa T Youssef, Gehan H Osman, Mona A Language: English Summary language: Arabic Other title: إستجابة محصولى القمح - الذرة وحالتهما الغذائية لإضافة المعادن الطبيعية تحت ظروف كلا من التسميد العضوى والحيوى. In: Mansoura University Journal of Soil Sciences and Agirucultural Engineering 2011.v.2(9) Online resources: Full Text Article. Availability: No items available. Add to cart (remove)
	2.	No cover image available Improving phosphorus use efficiency and its effect on the productivity of some crops [electronic resources]. by El-Etr, Wafaa T Osman, Mona A Mahmoud, A. A Language: English Summary language: Arabic Other title: تحسين كفاءة إستخدام الفسفور وأثرة على إنتاجية بعض المحاصيل . In: Mansoura University Journal of Soil Sciences and Agirucultural Engineering 2011.v.2(9) Online resources: Full Text Article. Availability: No items available. Add to cart (remove)

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