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Howladar, S. , Osman, A. , Rady, M. , Al-Zahrani, H.. "Magnesium Foliar Application and Phosphorien Soil Inoculation Positively Affect Pisum sativum L. Plants Grown on Sandy Calcareous Soil". World Academy of Science, Engineering and Technology, Open Science Index 89, International Journal of Agricultural and Biosystems Engineering, (2014), 8(5), 436 - 440.