http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
by John R. McWhinnie. Measuring victimisation / by Patrik Tornudd. Measuring the use of time / by Dagfinn As. Measuring housing conditions / by Catherine Pelli.
OECD social indicator development programme. no. 5-8