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BARAKAT, Ahmed, KHELLOUK, Rida, ENNAJI, Widad & MOSAID, Hassan. Investigation of heavy metal contamination and ecological and health risks in farmland soils from southeastern phosphate plateaus of Khouribga (Morocco). Ecological Questions [online]. 17 August 2022, T. 33, nr 4, s. 1–27. [accessed 29.1.2023]. DOI 10.12775/EQ.2022.036.