United States. Bureau of Labor Statistics. "Machinery," in United States. Bureau of Labor Statistics. "April 1984," PPI Detailed Report (April 1984) : 66-79. https://fraser.stlouisfed.org/title/63/item/21581/toc/234063 , accessed on April 25, 2024.
United States. Bureau of Labor Statistics. "Machinery," in United States. Bureau of Labor Statistics. "April 1984," PPI Detailed Report (April 1984) : 66-79. https://fraser.stlouisfed.org/title/63/item/21581/toc/234063 , accessed on April 25, 2024.