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Azad Ahmad Abdulla, Akram Othman Esmai and Haifa Sdiq yaseen 2023. Combination Influence of Humic Acid and Chelated Iron on yield and quality of Broccoli (Brassica oleracea L) in Erbil, Iraqi Kurdistan Region. Zanco Journal of Pure and Applied Sciences. 35, 1 (Feb. 2023), 126–135. DOI:https://doi.org/10.21271/ZJPAS.35.1.13.