United States. Bureau of Labor Statistics. "Machinery," in United States. Bureau of Labor Statistics. "April 1983," PPI Detailed Report (April 1983) : 57-64. https://fraser.stlouisfed.org/title/63/item/21569/toc/422038 , accessed on May 10, 2024.
United States. Bureau of Labor Statistics. "Machinery," in United States. Bureau of Labor Statistics. "April 1983," PPI Detailed Report (April 1983) : 57-64. https://fraser.stlouisfed.org/title/63/item/21569/toc/422038 , accessed on May 10, 2024.