一般注記Distributed to depository libraries in microfiche
"March 1987."
"CS 87-321"--P. [4] of cover
Physical description for original version: iii, 34 p. : 28 cm
書誌注記Includes bibliographical references
原資料等に関する注記原資料の出版事項: Washington, D.C. : Center for Education Statistics, Office of Educational Research and Improvement, U.S. Dept. of Education : [Available from Supt. of Docs., U.S. G.P.O., 1987]
SUPTDOC番号: ED 1.310/2: 281693
テクニカルリポート番号: CS 87-321
GPO管理番号: 466-A-3 (microfiche)