Search Results Use the search box below to revise your search, or start a new search. Studies (2) Variables Publications Your query returned 2 studies. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. Effects of Foot Patrol Policing in Boston, 1977-1985 (ICPSR 9351) Bowers, William J.; Hirsch, Jon; McDevitt, Jack; et al. 2. Retail-Level Heroin Enforcement and Property Crime in 30 Cities in Massachusetts, 1980-1986 (ICPSR 9667) Kleiman, Mark A.R.; Putala, Christopher E.