Producer Prices and Price Indexes for Commodity Groupings and Individual Items
United States. Bureau of Labor Statistics. "Producer Prices and Price Indexes for Commodity Groupings and Individual Items," in United States. Bureau of Labor Statistics. "March 1981," PPI Detailed Report (March 1981) : 39-75. https://fraser.stlouisfed.org/title/63/item/21544/toc/254061 , accessed on April 19, 2024.