M. H. Ahmed; Z. S. Omran; A. G. Oraibi. INCREASING SOME FLAVONOIDS COMPOUNDS FOR ECHINACEA PURPUREA L. USING COPPER OXIDE NANOPARTICLES IN VITRO. Iraqi J. Agric. Sci. 2024, 55 (2), 733-743. https://doi.org/10.36103/v5q3fg20.