Evaluation Technologies Incorporated ; Meredith J. Ludwig ... [and others] ; prepared for the National Center for Education Statistics under contract OE-300-81-0312 with the U.S. Department of Education
Date
1982
Series
Contractor report (National Center for Education Statistics)
National Opinion Research Center ; Francois Nielsen, Roberto M. Fernandez ; Samuel S. Peng, project officer ; prepared for the National Center for Education Statistics, under contract DE-300-78-0208, with the U.S. Department of Education
Date
[1982?]
Series
Contractor report (National Center for Education Statistics)