The effect of urea fertilization on the yield and oil of medicinal plants , sweet cumin, fenugreek, coriander and anise, which are always cultivated. BERJ [Internet]. 2025 Aug. 1 [cited 2026 Sep. 14];21(2.1):485-98. Available from: https://berj.uomosul.edu.iq/index.php/berj/article/view/51292