http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
International Union for the Scientific Study of Population
Prepared by the Demographic Dictionary Committee of the International Union for the Scientific Study of Population.
United Nation publication. Sales number: 58.XIII.4.
United Nations. [Document] ST/SOA/Ser.A/29
Population studies (New York, N.Y.) ; no. 29