& et al. R. STUDY OF TOXIC HEAVY METAL REMOVAL BY DIFFERENT CHITOSAN/HYACINTHS PLANT COMPOSITE. Iraqi J. Agric. Sci. [Internet]. 2019 Oct. 23 [cited 2024 May 2];50(5). Available from: https://jcoagri.uobaghdad.edu.iq/index.php/intro/article/view/809