United States. Bureau of Labor Statistics. "Rubber Products," in United States. Bureau of Labor Statistics. "May 1984," PPI Detailed Report (May 1984) : 47-50. https://fraser.stlouisfed.org/title/63/item/21582/toc/237224 , accessed on May 14, 2024.
United States. Bureau of Labor Statistics. "Rubber Products," in United States. Bureau of Labor Statistics. "May 1984," PPI Detailed Report (May 1984) : 47-50. https://fraser.stlouisfed.org/title/63/item/21582/toc/237224 , accessed on May 14, 2024.