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Najm Abdullah Jumaah Al-Zubaidi and Baidaa Majeed Rashid Awaid 2024. Effect of Foliar Nutrition by Humic and Fulvic Acid and the Interaction between them on Productivity of Sun Flower (Helianthus annuus L.). Academic Science Journal. 2, 3 (Jul. 2024), 66–78. DOI:https://doi.org/10.24237/ASJ.02.03.770B.