Changing Fortunes of Bituminous Coal(2) New Techniques Aid the Industry's Recovery
Federal Reserve Bank of Cleveland. "Changing Fortunes of Bituminous Coal(2) New Techniques Aid the Industry's Recovery," in Federal Reserve Bank of Cleveland. "April 1956," Economic Review (Federal Reserve Bank of Cleveland) (April 1956) : 1-9. https://fraser.stlouisfed.org/title/1328/item/4193/toc/34304 , accessed on April 25, 2024.