附註:"This study was supported by Contract/Grant No. REC-9815157 between the National Academy of Sciences and the National Science Foundation and the U.S. Department of Education, National Center for Education Statistics"--Title page verso.
Includes bibliographical references (pages 74-80).
Front Matter -- Preface -- Contents -- Executive Summary -- 1 Introduction and Rationale -- 2 Range -- 3 Impact -- 4 New Directions -- 5 Infrastructure -- 6 Recommendations -- References -- Biographical Sketches.
