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1 |
A sequence of educational influences, traced through unpublished writings of Pestalozzi, Fröbel, Diesterweg, Horace Mann, and Henry Barnard Ulich, Robert. - Leipzig : Deutsche Nationalbibliothek, 2023
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2 |
A sequence of educational influences, traced through unpublished writings of Pestalozzi, Fröbel, Diesterweg, Horace Mann, and Henry Barnard Ulich, Robert. - Cambridge : Harvard University Press, 1935
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