File(s): https://fraser.stlouisfed.org/scribd/?toc_id=499268&filepath=/docs/publications/frbslreview/rev_stls_197209.pdf&start_page=11#scribd-open

File(s): File format is application/pdf https://files.stlouisfed.org/files/htdocs/publications/review/72/09/Production_Sep1972.pdf