AbdussalamA. M., KabirM. G., and NuraS. G. “DETERMINATION OF HEAVY METALS ACCUMULATION IN LACTUCA SATIVA AND SPINACIA OLERACEA GROWN FROM CONTAMINATED SOILS OBTAINED BESIDE FCE KATSINA, NIGERIA”. FUDMA JOURNAL OF SCIENCES, Vol. 4, no. 4, June 2021, pp. 207 -12, doi:10.33003/fjs-2020-0404-473.