United States. Bureau of Labor Statistics. "NAICS Conversion," in United States. Bureau of Labor Statistics. "May 2003," PPI Detailed Report (May 2003) : 9-9. https://fraser.stlouisfed.org/title/63/item/21811/toc/411039 , accessed on March 29, 2024.
United States. Bureau of Labor Statistics. "NAICS Conversion," in United States. Bureau of Labor Statistics. "May 2003," PPI Detailed Report (May 2003) : 9-9. https://fraser.stlouisfed.org/title/63/item/21811/toc/411039 , accessed on March 29, 2024.