Codebook for NBER-CES Manufacturing Industry Database (2009) [NAICS and SIC], by Randy A. Becker , Wayne B. Gray , Jordan Marvakov , and Eric J. Bartelsman
Main website: https://www.nber.org/data/nberces5809.html (note: a newer version is available at http://www.nber.org/data/nberces.html - this codebook does not necessarily reflect the more recent version.)
Live version of the DDI codebook at https://www2.ncrn.cornell.edu/ced2ar-web/codebooks/nber-ces/
Please cite this codebook as:
Cornell NSF-Census Research Network. Codebook for the NBER-CES Manufacturing Industry Database (2009) [Codebook file]. Cornell Institute for Social and Economic Research and Labor Dynamics Institute [distributor]. Cornell University, Ithaca, NY, 2013
Please cite this dataset as:
Becker, Randy A., Wayne B. Gray, Jordan Marvakov. NBER-CES Manufacturing Industry Database: June 2013 Revision [Computer file]. Boston, MA; National Bureau of Economic Research [distributor], Boston, MA, 2013
The License only applies to the codebook in this repository. The data itself does not appear to be under an explicit license, being in part prepared by U.S. government employees.