Complete Titles and Sources of Principal Business Cycle Series and Diffusion Indexes
United States. Bureau of the Census. "Complete Titles and Sources of Principal Business Cycle Series and Diffusion Indexes," in United States. Bureau of the Census. "April 1963," Business Conditions Digest (April 1963) : 75-76. https://fraser.stlouisfed.org/title/43/item/7190/toc/260165 , accessed on April 19, 2024.