?:authorAffiliation
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[\'Biosystems and Environmental Engineering Research Group, Department of Soil Science and Agricultural Engineering, Faculty of Agriculture, University of Zimbabwe, P.O.Box MP 167, Mount Pleasant, Harare, Zimbabwe. Electronic address: wgwenzi@yahoo.co.uk.\', \'Department of Environmental Medicine, Poznan University of Medical Sciences, Rokietnicka 8, 60-806, Poznań, Poland; Integrated Science Association (ISA), Universal Scientific Education and Research Network (USERN), Poznań, Poland.\']
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