Title: Helsinky - Madrid
Subjects: European cooperation, Conference on Security and Cooperation in Europe (1975 : Helsinki, Finland), Conference on Security and Cooperation in Europe (1980 : Madrid, Spain), Conference on Security and Cooperation in Europe (1975 : Helsinki, Finland) (uri) http://id.loc.gov/authorities/names/n2018059631 (uri) http://viaf.org/viaf/sourceID/LC|n2018059631