Search Results Use the search box below to revise your search, or start a new search. Studies (10) Variables Publications Your query returned 3 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. County Characteristics, 2000-2007 [United States] (ICPSR 20660) Inter-university Consortium for Political and Social Research 2. Electric Utility Rate Demonstration Project: Arizona, 1975-1976 (ICPSR 7887) United States Department of Energy 7 more results in Electric Utility Rate Demonstration Project Series 3. Great Plains Population and Environment Data: Biogeochemical Modeling Data, 1860-2003 [United States] (ICPSR 31681) Parton, William J.; Gutmann, Myron P.; Hartman, Melannie D.; et al.