http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Mexico City, industrialization, migration, and the labour force, 1930-1970
by Humberto Munoz, Orlandina de Oliveira, Claudio Stern.
Selected studies on the dynamics, patterns, and consequences of migration ; 1
Reports and papers in the social sciences ; no. 46