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by whatok
2710 days ago
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I'm not sure if you have to verify as some sort of investing class to access but GMO (Grantham's fund) has a lot of papers published. This: https://www.gmo.com/docs/default-source/research-and-comment... has that quoted figure and references this: 2 D.R. Montgomery, Dirt: The Erosion of Civilizations, University of California Press, 2007. |
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