http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
International comparisons of real product and purchasing power
United Nations International Comparison Project
Irving B. Kravis, Alan Heston, Robert Summers, in collaboration with Alicia Civitello [and others] ; produced by the Statistical Office of the United Nations and the World Bank.
At head of title: United Nations International Comparison Project, phase II.
Includes bibliographical references and index.