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. Strengthening Washington DC Families (SWFP) Project, 1998 - 2004 (ICPSR 34425) Kumpfer, Karol; Gottfredson, Denise 2. Variations in Criminal Patterns Among Narcotic Addicts in Baltimore and New York City, 1983-1984 (ICPSR 9586) Nurco, David N.; Hanlon, Thomas E.; Kinlock, Timothy W.; et al.