Search Results Use the search box below to revise your search, or start a new search. Studies (13) Variables Publications Your query returned 3 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. American Community Survey (ACS): Public Use Microdata Sample (PUMS), 2000 (ICPSR 3889) United States Department of Commerce. Bureau of the Census 10 more results in American Community Survey (ACS) Series 2. Children of Immigrants Longitudinal Study (CILS), 1991-2006 (ICPSR 20520) Portes, Alejandro; Rumbaut, Rubén G. 3. Immigration and Intergenerational Mobility in Metropolitan Los Angeles (IIMMLA), 2004 (ICPSR 22627) Rumbaut, Rubén G.; Bean, Frank D.; Chávez, Leo R.; et al.