Producer Price Indexes for the Net Output of Selected Industries and Products
United States. Bureau of Labor Statistics. "Producer Price Indexes for the Net Output of Selected Industries and Products," in United States. Bureau of Labor Statistics. "May 1981," PPI Detailed Report (May 1981) : 17-38. https://fraser.stlouisfed.org/title/63/item/21546/toc/44146 , accessed on May 9, 2024.