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. The Mexican American Study Project II (MASP II), 1998-2000 (ICPSR 28481) Ortiz, Vilma; Telles, Edward E. 2. National Assessment Survey of Law Enforcement Anti-Gang Information Resources, 1990-1991 (ICPSR 6237) Curry, G. David; Fox, Robert J.; Ball, Richard A.; et al.