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. "June 1991," PPI Detailed Report (June 1991) : 146-191. https://fraser.stlouisfed.org/title/63/item/21668/toc/163977 , accessed on April 24, 2024.