United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "March 2001," PPI Detailed Report (March 2001) : 3-4. https://fraser.stlouisfed.org/title/63/item/21785/toc/248523 , accessed on April 19, 2024.
United States. Bureau of Labor Statistics. "Contents," in United States. Bureau of Labor Statistics. "March 2001," PPI Detailed Report (March 2001) : 3-4. https://fraser.stlouisfed.org/title/63/item/21785/toc/248523 , accessed on April 19, 2024.