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Zapis bibliograficzny
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Friedrich A., The Attitudes of the Polish Positivists towards the Assimilation of Jews, [w:] Iggud. Selected Essays in Jewish Studies, red. Bacon, G., red. Baumgarten, A., et al., t. 2: History of the Jewish People and Contemporary Jewish Society, Jerusalem, 2009, s. 67–76
Friedrich Agnieszka, The Attitude of the Polish Positivists to the Traditional Jewish System of Education, "The Internet version of „Polin”", 2014.