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Effect of different Levels of Fertilizer (DAP) onthe Publican (Calotropis procera) Leaves Content of Phenol and (N, P, K) Compounds. مجلة للعلوم الزراعية. 2021;34(1). Accessed June 18, 2026. https://journal.damascusuniversity.edu.sy/index.php/agrj/article/view/203