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| Utgitt
| Durham, N.C. : Duke University Press , 1959
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| Omfang
| xix, 268 s. : diagrs., tables.
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| Opplysninger
| "The final report of the Study of differences in State per capita incomes, which was supported jointly by Duke University and the Rockefeller Foundation.". - Bibliographical footnotes.
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| Emner
| |
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