A. Fowotade Sulayman, et al. “Assessment of Atmospheric Metal Pollution Biomonitoring Potential by Neem Tree (Azadirachta Indica) Leaves in Katsina Metropolitan Area of Katsina State, Nigeria”. Current Approaches in Science and Technology Research Vol. 3, May 2021, pp. 37-45, doi:10.9734/bpi/castr/v3/8345D.