1
Published: 2006
Superior document: Working paper series / National Bureau of Economic Research 12805
2
Published: 1988.
Superior document: National Bureau of Economic Research project report
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3
Published: 1988.
Superior document: National Bureau of Economic Research project report
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4
Published: c1999.
Superior document: A National Bureau of Economic Research project report
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5
Published: [2016]
Superior document: Title is part of eBook package: De Gruyter University of Pennsylvania Press Package Archive 1898-1999
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