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. California Work Pays Demonstration Project: County Welfare Administrative Data, 1992-1998, Public Use Version 4.1 (ICPSR 4207) Brady, Henry E.