Karanja, N.K; Njenga, M; Mutua, G.K.; Carl-Johan, Lagerkvist; Kutto, E.; Okello, J.J (2011)
Assessment of heavy metal contaminants, nitrate and pesticide residues was done on kale (Brassica olaracea var. olecephala), a leafy vegetable grown by farmers in peri-urban sites of Wangige, Athi River and Ngong in Nairobi, ...