Concentration Levels of Iron (Fe), Copper (Cu), Lead (Pb), Cadmium (Cd), Chromium (Cr) and Selected Nutrients in Water of Motoine River Channel, Kibera, Kenya - Muthee, S. M.; Salim, A. M.; Onditi, A. O.; Yusuf, A. O. (Theory and Applications of Chemistry Vol. 1, 2019)