The Missing Value of Data [pdf](business.columbia.edu)
business.columbia.edu
The Missing Value of Data [pdf]
https://business.columbia.edu/sites/default/files-efs/citation_file_upload/BOVDataGDP_Dec2025_v2.pdf
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https://business.columbia.edu/sites/default/files-efs/citation_file_upload/BOVDataGDP_Dec2025_v2.pdf
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