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. "February 1964," Business Conditions Digest (February 1964) : 75-76. https://fraser.stlouisfed.org/title/43/item/7200/toc/41800 , accessed on April 18, 2024.