Ayyub j.Abdlrahmaan Al-bayaty. "Physiological Effect of Liquid Organic Fertilizer And Plant Grotwth Regulators on Growth of Black Seed(Nigellasativa L.)". Tikrit Journal of Pure Science, م 20, عدد 1, فبراير، 2023, ص 48-54, doi:10.25130/tjps.v20i1.1134.