A birth cohort study [microform] : conceptual and design considerations and rationale / [prepared by Kristin Moore ... [et al.]] (Working paper series ; no. 1999-01)
A birth cohort study [microform] : conceptual and design considerations and rationale / [prepared by Kristin Moore ... [et al.]]
原資料の出版事項: [Washington, DC] : U.S. Dept. of Education, Office of Educational Research and Improvement, National Center for Education Statistics : Educational Resources Information Center, [1999]