United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "March 2002," PPI Detailed Report (March 2002) : 3-4. https://fraser.stlouisfed.org/title/63/item/21798/toc/116519 , accessed on May 10, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "March 2002," PPI Detailed Report (March 2002) : 3-4. https://fraser.stlouisfed.org/title/63/item/21798/toc/116519 , accessed on May 10, 2024.