Price Indexes and Percent Changes for Total Railroad Freight and Selected STCC Groups
United States. Bureau of Labor Statistics. "Price Indexes and Percent Changes for Total Railroad Freight and Selected STCC Groups," in United States. Bureau of Labor Statistics. "April 1983," PPI Detailed Report (April 1983) : 127-127. https://fraser.stlouisfed.org/title/63/item/21569/toc/422023 , accessed on March 29, 2024.