1.

図書
図書
1. The high school curriculum
ed. by Harl R. Douglass ; by Vernon E. Anderson, Rudyard K. Bent, Nelson L. Bossing ...[et al.]
出版情報: New York : The Ronald Press Co., c1947
シリーズ名: Douglass series in education
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2.

図書
図書
2. Principles of secondary education. 2nd ed
[by] Rudyard K. Bent, Henry H. Kronenberg
出版情報: New York : McGraw-Hill, c1949
シリーズ名: McGraw-Hill series in education
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