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. NORC Amalgam Survey, December 1973 (ICPSR 7556) Davis, James A.; Coleman, James S.; Nie, Norman H.; et al.