Khalifa, A., 		Hamed, I., 		Ahmed, S., 		Ali, M., 		Ali, I., 		Heng, L., & 		Dawoud, D.
(2018).
 Influence of fertigation regimes on yield and fruit quality of grapefruit under Khartoum State conditions, Sudan.
<em>Gezira Journal Of Agricultural Science, 16</em>(2).
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