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. "March 1978," PPI Detailed Report (March 1978) : 79-79. https://fraser.stlouisfed.org/title/63/item/21508/toc/250324 , accessed on April 24, 2024.