Search Results Use the search box below to revise your search, or start a new search. Studies (5) 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. Enhanced Services for the Hard-to-Employ Demonstration and Evaluation Project: Kansas and Missouri, Enhanced Early Head Start (ICPSR 33801) Hsueh, JoAnn 2. National Household Education Survey, 2001 (ICPSR 3198) United States Department of Education. National Center for Education Statistics 2 more results in National Household Education Survey (NHES) Series 3. Project on Human Development in Chicago Neighborhoods (PHDCN): School and Day Care Screen, Wave 2, 1997-2000 (ICPSR 13653) Earls, Felton J.; Brooks-Gunn, Jeanne; Raudenbush, Stephen W.; et al.