http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Proceedings of the World Population Conference
World Population Conference (1965 : Belgrade)
Τ.1. Summary report. τ. 2. Selected papers and summaries, fertility, family planning, mortality -- τ.3. Projections measurement of population trends