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Singh KP, Gupta S, Rai P.Singh KP, et al. Among authors: rai p.Environ Sci Pollut Res Int. 2014 May;21(9):6001-15. doi: 10.1007/s11356-014-2517-4. Epub 2014 Jan 25.Environ Sci Pollut Res Int. 2014.PMID: 24464077
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Singh KP, Gupta S, Ojha P, Rai P.Singh KP, et al. Among authors: rai p.Environ Sci Pollut Res Int. 2013 Apr;20(4):2271-87. doi: 10.1007/s11356-012-1102-y. Epub 2012 Aug 1.Environ Sci Pollut Res Int. 2013.PMID: 22851225
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Singh KP, Gupta S, Rai P.Singh KP, et al. Among authors: rai p.Ecotoxicol Environ Saf. 2013 Sep;95:221-33. doi: 10.1016/j.ecoenv.2013.05.017. Epub 2013 Jun 12.Ecotoxicol Environ Saf. 2013.PMID: 23764236