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Rawlins, Barry; Lark, R.M.; Webster, R.; O'Donnell, Kevin. 2006 The use of soil survey data to determine the magnitude and extent of historic metal deposition related to atmospheric smelter emissions across Humberside, UK. Environmental Pollution, 143. 416-426. https://doi.org/10.1016/j.envpol.2005.12.010