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1.

図書
図書
1. An introduction to educational research. 2nd ed
Robert M.W. Travers
出版情報: New York : Macmillan (N.Y.) , London : Collier-Macmillan, 1964
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2.

図書
図書
2. Second handbook of research on teaching : a project of the American Educational Research Association
Edited by Robert M. W. Travers, editor
出版情報: Chicago : Rand McNally, c1973
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