Study Search Results Your query returned 3 results. Series results are grouped under the most relevant study. You can ungroup series results. Results per page: 25 50 100 Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. (?) Study Title/Investigator 1. Census of Population and Housing, 1990 [United States]: Summary Tape File 4B (ICPSR 6271) United States Department of Commerce. Bureau of the Census 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.