Mapping heavy metal contamination in soils around Ikpeshi marble mining sites in Southern Nigeria using the regression kriging spatial prediction approach. - Usman Nurudeena, Sule Tunde; Hanafiah, Marlia Mohd; Nwanosike, Amadi Akobundu; Hassan, Faez M.; Nawaz, Rab; Harun, Siti Norliyana (Soil & Environment, 2025)