A Study of Changes in the German Polity: The Wahlstudie 1961
The following citation is from the ICPSR Bibliography of Data-related Literature:
Scheuch, Erwin K., Wildenmann, Rudolf . Sep 1964. A Study of Changes in the German Polity: The Wahlstudie 1961. Sixth World Congress of the International Political Science Association. Geneva
The citation above relates to an ICPSR study that is forthcoming.