Não informado. (1960). OECD Economic Surveys. Organization for Economic Co-operation and Development.
Chicago-referens (17:e uppl.)Não informado. OECD Economic Surveys. Paris: Organization for Economic Co-operation and Development, 1960.
MLA-referens (8:e uppl.)Não informado. OECD Economic Surveys. Organization for Economic Co-operation and Development, 1960.
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