United States. Bureau of Labor Statistics. "January 2001," PPI Detailed Report (January 2001). https://fraser.stlouisfed.org/title/63/item/21783, accessed on May 7, 2024.
United States. Bureau of Labor Statistics. "January 2001," PPI Detailed Report (January 2001). https://fraser.stlouisfed.org/title/63/item/21783, accessed on May 7, 2024.