Não informado. (1963). Bulletin of the Oxford University Institute of Economics & Statistics. Oxford University Institute of Economics and Statistics.
Chicago-referens (17:e uppl.)Não informado. Bulletin of the Oxford University Institute of Economics & Statistics. Oxford, Inglaterra: Oxford University Institute of Economics and Statistics, 1963.
MLA-referens (8:e uppl.)Não informado. Bulletin of the Oxford University Institute of Economics & Statistics. Oxford University Institute of Economics and Statistics, 1963.
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