Omar Y. A. Al-Rawi, Omar I. M. Al-Dulaimi. “Effect of Phases of Adding Humic Fertilizer and Planting Dates on Some Growth Characteristics of Maize”. Annals of the Romanian Society for Cell Biology (April 13, 2021): 4643–4653. Accessed April 19, 2024. https://annalsofrscb.ro/index.php/journal/article/view/3012.