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. Most Downloaded (?) Study Title/Investigator 1. Detroit Area Study, 1979: A Study of Metropolitan Issues (ICPSR 9301) Loftin, Colin 2. Firearms, Violence, and Youth in California, Illinois, Louisiana, and New Jersey, 1991 (ICPSR 6484) Sheley, Joseph F.; Wright, James D.; Smith, M. Dwayne 3. Project on Human Development in Chicago Neighborhoods (PHDCN): Gun Ownership, Wave 2, 1997-2000 (ICPSR 13626) Earls, Felton J.; Brooks-Gunn, Jeanne; Raudenbush, Stephen W.; et al.