U.S. Dept. of Education, Office of Educational Research and Improvement, Educational Resources Information Center,

National Center for Education Statistics, U.S. Dept. of Education, Office of Educational Research and Improvement : For sale by the U.S. G.P.O., Supt. of Docs.,

Program on Employment and Disability, New York State School of Industrial and Labor Relations, Cornell University ; U.S. Dept. of Education, Office of Educational Research and Improvement, Educational Resources Information Center,

National Center for Research on Evaluation, Standards, and Student Testing (CRESST), Graduate School of Education & Information Studies, University of California, Los Angeles ; U.S. Dept. of Education, Office of Educational Research and Improvement, Educational Resources Information Center,

U.S. Dept. of Education, Office of Educational Research and Improvement,

ERIC Clearinghouse on Reading, English, and Communication,

ERIC Clearinghouse on Assessment & Evaluation, the Catholic Unviversity of America,

National Center for the Study of Writing ; U.S. Dept. of Education, Office of Educational Research and Improvement, Educational Resources Information Center,

s.n.,

U.S. Dept. of Transportation, Federal Highway Administration,

s.n.,

Rand ; U.S. Dept. of Education, Office of Educational Research and Improvement, Educational Resources Information Center,