1.
図書 |
by Éd. Claparéde ; translated from the fourth edition of "Psychologie de l'enfant et pédagogie expérimentale" by Mary Louch and Henry Holman
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2.
図書 |
by A. G. Hughes and E. H. Hughes
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3.
図書 |
Bertrand Russell
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4.
図書 |
Fritz Künkel dan Ruth Künkel ; [diterdjemahkan oleh Hasan Amin]
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5.
図書 |
[отв. редактор, В.Н. Мясищев]
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