creator	Maruyama, Yasushi;
journal title	Bulletin of Faculty of the Education, Hiroshima University. Part 1, Educational research
issue	Issue 42
date of issued	1994-03-10
SelfDOI	10.15027/27209

creator	Maruyama, Yasushi;
journal title	Bulletin of the Graduate School of Education, Hiroshima University. Part 3, Education and human science
issue	Issue 54
date of issued	2006-03-28
SelfDOI	10.15027/14474