📁 Babcock,

Stephen Moulton Babcock, 1843-1931, was a professor of agricultural chemistry at the University of Wisconsin. He is best known for the Babcock test, a method of measuring butterfat content in milk. His research on the nutrition of dairy cattle paved the way for the discovery of vitamin A.

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Living Edens
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Wikipedia: Lutetium
http://en.wikipedia.org/wiki/Lutetium
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Lenntech: Lutetium
http://www.lenntech.com/Periodic-chart-elements/Lu-en.htm
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EnvironmentalChemistry.com: Lutetium
http://environmentalchemistry.com/yogi/periodic/Lu.html
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