Sulayman, A. F. ., Abdu, H. ., Saidu, A. A. ., Ahmad, F. ., Suleiman, J. Z. ., & Isyaku, S. . (2021). Bark of Neem Tree (Azadirachta indica) as Bioindicator for Deposition of Heavy Metals around Katsina Steel Rolling Company in Katsina Township . Current Approaches in Science and Technology Research Vol. 3, 9–18. https://doi.org/10.9734/bpi/castr/v3/8344D