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. Great Plains Population and Environment Data: Agricultural Data, 1870-1997 [United States] (ICPSR 4254) Gutmann, Myron P. 2. 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.