Study Search Results Your query returned 2 results. Use the search box below to revise your search, or start a new search. Results per page: 25 50 100 Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. (?) Study Title/Investigator 1. Studies in International Integration (ICPSR 5517) Segal, Aaron 2. Studies in International Integration, 1967 (ICPSR 5507) Haas, Ernst B.; Schmitter, Philippe C.