Não informado. (2001). Economic Quarterly. Federal Reserve Bank of Richmond.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Economic Quarterly. Richmond, Va: Federal Reserve Bank of Richmond, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Economic Quarterly. Federal Reserve Bank of Richmond, 2001.
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