A. Al-Zubaidy, A., S.Ghafoor, B., & Rasul, A. (2020). The Performance of Two Species of Black Cumin (Nigella sativa L.) and (Nigella arvensis L.) Under Different Sowing Dates in Spring and Autumn at hallabja Governorate /Iraqi Kurdistan Region.. Ibn AL- Haitham Journal For Pure And Applied Science, 33(3), 1-10. Retrieved from https://jih.uobaghdad.edu.iq/index.php/j/article/view/2465