Pyun, C. S. "New Measure of Industrial Activity: District Manufacturing Production Index," in Federal Reserve Bank of Atlanta. "June 1970, Volume 55, Number 6," Economic Review (Federal Reserve Bank of Atlanta) (June 1970) : 2-6. https://fraser.stlouisfed.org/title/884/item/34954/toc/278309 , accessed on April 26, 2024.