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1. Commodity Flow Survey, Dept. of Transportation 

The CFS provides data on national freight flows. Data include the commodity industries, values, weights, average distance, origin state and destination state of shipments. State-state flows data available for 1993, 1997, 2002, 2007, 2012 and 2017. State-state flows by industry data available for 2002, 2007, 2012 and 2017. 

Provided by Stephen J. Redding.

As used in: The Determinants of Quality Specialization

Jonathan I. Dingel. The Review of Economic Studies, Volume 84, Issue 4, October 2017, Pages 1551–1582,

The Commodity Flow Survey was preceded by the Commodity Transportation Survey






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