Alzurfi, Sadiq Kadhum Lafta, Ahmed A. Motar, and Furqan Y. Jawad Sharba. 2019. “The Competition Between of Invasive Hydrilla Verticillata L.f. and Native Ceratophyllum Demersum L. In Monocultures and Mixed Cultures Experimental”. Iraqi Journal of Science 60 (9): 1933-47. https://doi.org/10.24996/ijs.2019.60.9.6.