The 1993 Iowa Youth Survey [microform] : normative and trend data / prepared by Substance Education Program, Office of Educational Services for Children, Families and Communities
The 1993 Iowa Youth Survey [microform] : normative and trend data / prepared by Substance Education Program, Office of Educational Services for Children, Families and Communities
原資料の出版事項: Des Moines, Iowa ; [Washington, DC] : Iowa Dept. of Education : U.S. Dept. of Education, Office of Educational Research and Improvement, Educational Resources Information Center, 1993