Search Results Use the search box below to revise your search, or start a new search. Studies (30) Variables Publications Your query returned 2 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. Immigrants Admitted to the United States, 1972 (ICPSR 8952) United States Department of Justice. Immigration and Naturalization Service 28 more results in Immigrants Admitted to the United States Series 2. Transatlantic Trends: Immigration, 2008 (ICPSR 26502) Wunderlich, Tanja; Ziebarth, Astrid; Gustin, Delancey; et al.