Descripción
Notas: | "This study was supported by Contract No. RN96131001 between the National Academy of Sciences and the U.S. Department of Education. Support of the work of the Committee on National Statistics is provided by a consortium of federal agencies through a grant from the National Science Foundation (Number SBR-9709489)"--Title page verso |
Descripción Física: | 1 online resource (xi, 256 pages) : illustrations |
Bibliografía: | Includes bibliographical references (pages 256-250). |
ISBN: | 0309501571 9780309501576 |