University of Wisconsin–Madisonimages.library.wisc.edu/EcoNatRes/EFacs2/MineralsYearBk/...arsenate...
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University of Wisconsin–Madisonimages.library.wisc.edu/EcoNatRes/EFacs2/MineralsYearBk/...arsenate and magnesium arsenate are being replaced by imported derris root and cubé root,