Title: Belgique: Écononmie sociale
Subjects: Exposition universelle internationale de 1900 (Paris, France), Labor and laboring classes, Social conditions, Labor, Working class, Exposition universelle (1900 : Paris, France) (uri) http://id.loc.gov/authorities/names/n50054651 (uri) http://viaf.org/viaf/sourceID/LC|n50054651
Places: Belgium