Selections
introd. by Jean Piaget ; in commemmoration of the third centenary of the publication of Opera didactica omnia, 1657-1957 / ed. by Unesco
Bok Engelsk 1957 Jan Amos Comenius
Utgitt | Paris : Unesco , 1957
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Omfang | 183 s., pl.
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Emner | pedagogiske tekster
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