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A teenager wears torn rubber boots in a muddy local market in Bac Ha, Viet Nam. As of 2005 figures, half the world population—more than 3 billion people–is estimated to live on less than USD 2.50 a day. Bac Ha, Viet Nam. UN Photo/Kibae Park.

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Research Papers

WIDER Research Papers (ISSN 1810-2611) are preliminary documents posted to stimulate discussion and critical comment. They are registered with an individual ISBN to enable citation and library referencing.

See the 'Catalogue of Research Papers 2004-2009 (month)' PDF for an up to date and chronological list of all the papers in this series, or use the search options to compile your own interest lists.

The use of particular designations of countries or territories does not imply any judgement by United Nations University as to the legal status of such countries or territories, of their authorities and institutions or of the delimitation of their boundaries. The designations ‘developed’ and ‘developing’ regions are intended for statistical and analytical convenience and do not necessarily express a judgement about the stage reached by a particular country or area in the development process.