United States. Bureau of Labor Statistics. "Food Products," in United States. Bureau of Labor Statistics. "June 1987," PPI Detailed Report (June 1987) : 18-29. https://fraser.stlouisfed.org/title/63/item/21619/toc/45777 , accessed on April 19, 2024.
United States. Bureau of Labor Statistics. "Food Products," in United States. Bureau of Labor Statistics. "June 1987," PPI Detailed Report (June 1987) : 18-29. https://fraser.stlouisfed.org/title/63/item/21619/toc/45777 , accessed on April 19, 2024.