Producer Price Indexes and Percent Changes for Commodity Groupings and Individual Items
United States. Bureau of Labor Statistics. "Producer Price Indexes and Percent Changes for Commodity Groupings and Individual Items," in United States. Bureau of Labor Statistics. "September 1997," PPI Detailed Report (September 1997) : 156-198. https://fraser.stlouisfed.org/title/63/item/21743/toc/81862 , accessed on April 24, 2024.