- Author: National Research Council, Division of Behavioral and Social Sciences and Education, Committee on National Statistics, Commission on Behavioral and Social Sciences and Education, Michele Ver Ploeg, Robert A. Moffitt, Panel on Data and Methods for Measuring the Effects of Changes in Social Welfare Programs
- Language: English
- Year: 1999
- Author: Michele Ver Ploeg, Robert A. Moffitt
- Language: English
- Year: 2001