Given name: Unknown Family name: Rubinsztejn
- YES
 - Male
 - Rubinsztejn
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The author's friend. Every day he was led to work outside the ghetto, and he took out piece by piece notebooks with Kaplan's diary. He gave them to a Polish man called Wladyslaw Wojcek in a village of Liw near Warsaw.
 - Intelligentsia
 
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Kaplan, Chaim Aron Scroll of Agony. The Warsaw Diary, transl. from Hebrew and ed. by A. I. Katsh
 - xiv /wprow/v