Cross-Classification of Business Indicators by Economic Process and Cyclical Timing
United States. Bureau of the Census. "Cross-Classification of Business Indicators by Economic Process and Cyclical Timing," in United States. Bureau of the Census. "February 1968," Business Conditions Digest (February 1968) : 5-5. https://fraser.stlouisfed.org/title/43/item/7248/toc/410926 , accessed on March 28, 2024.