Search Results Use the search box below to revise your search, or start a new search. Studies (1) Variables Publications Your query returned 1 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. Centre-Periphery Structures in Europe [1880-1978]: An International Social Science Council (ISSC) Workbook in Comparative Analysis (ICPSR 7571) Rokkan, Stein, et al.