Uroko, RI, VE Okpashi, NE Etim, and AC Fidelia. 2019. “Quantification of Heavy Metals in Canned Tomato Paste Sold in Ubani-Umuahia, Nigeria”. Journal of Bio-Science 28 (December):1-11. https://doi.org/10.3329/jbs.v28i0.44705.