Nwoko, C., L. Ukiwe, and U. U. Egereonu. “SEASONAL VARIATION OF HEAVY METALS CONCENTRATIONS IN FISH IN OGUTA LAKE, NIGERIA”.
JOURNAL OF ADVANCES IN CHEMISTRY
, vol. 10, no. 7, Oct. 2014, pp. 2929-36, doi:10.24297/jac.v10i7.6807.