United States. Bureau of Labor Statistics. "March 2003," PPI Detailed Report (March 2003). https://fraser.stlouisfed.org/title/63/item/21809, accessed on May 7, 2024.
United States. Bureau of Labor Statistics. "March 2003," PPI Detailed Report (March 2003). https://fraser.stlouisfed.org/title/63/item/21809, accessed on May 7, 2024.