Search Results Use the search box below to revise your search, or start a new search. Studies (4) Variables Publications Your query returned 4 studies. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. Comparative State Elections Project, 1968 (ICPSR 7508) Kovenock, David M.; Prothro, James W. 2. Perceptions of the 1963 Presidential Transition (ICPSR 7231) Survey Research Center 3. Perceptions of Symbols in Foreign Policy: Data from the Vietnam Case, 1964-1968 (ICPSR 5903) Sullivan, Michael P. 4. United States Presidential State of the Union Addresses, 1913-2008 (ICPSR 24301) Janda, Kenneth; Brunner, Ronald D.