Study Search Results Your query returned 2 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. Most Downloaded (?) 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. Panel Study of Income Dynamics, 1989-1990: Latino Sample (ICPSR 3203) Hofferth, Sandra; Stafford, Frank P.; Yeung, Wei-Jun J.; et al.