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	1.	Blood manganese concentrations among first-grade schoolchildren in two South African cities. [electronic resource] by Röllin, Halina Mathee, Angela Levin, Jonathan Theodorou, Penny Wewers, Francois Producer: 20041221 In: Environmental research vol. 97 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Examining the association between blood manganese and lead levels in schoolchildren in four selected regions of South Africa. [electronic resource] by Röllin, Halina B Mathee, Angela Levin, Jonathan Theodorou, Penny Tassell, Halina Naik, Ina Wewers, Francois Producer: 20070322 In: Environmental research vol. 103 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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