United States. Bureau of Labor Statistics. "Machinery," in United States. Bureau of Labor Statistics. "April 1985," PPI Detailed Report (April 1985) : 78-95. https://fraser.stlouisfed.org/title/63/item/21593/toc/209023 , accessed on March 28, 2024.
United States. Bureau of Labor Statistics. "Machinery," in United States. Bureau of Labor Statistics. "April 1985," PPI Detailed Report (April 1985) : 78-95. https://fraser.stlouisfed.org/title/63/item/21593/toc/209023 , accessed on March 28, 2024.