Study Search Results Your query returned 1 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. Correlates of War Project: Militarized Interstate Dispute (MID) Data, 1816-2001 (ICPSR 24386) Diehl, Paul; Geller, Daniel; Gibler, Doug; et al.