German election study, July 1961
by Gerhard Baumert, Erwin K. Scheuch, Rudolf Wildenmann, Universität zu Köln. Zentralarchiv für Empirische Sozialforschung, Methoden und Analysen (Germany) Zentrum für Umfragen, Inter-university Consortium for Political and Social Research
1975
Inter-university Consortium for Political and Social Research [distributor·1 editions