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. "May 1981," PPI Detailed Report (May 1981) : 39-74. https://fraser.stlouisfed.org/title/63/item/21546/toc/44136 , accessed on April 23, 2024.