Given name: Karol Family name: Grinberg
- YES
- Male
- Karol
- Grinberg
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                                        a Pole, trade contacts with the ghetto, friend of the author's father, helps 
- Poles
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            Related sources:
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                                        Eisenberg, Miriam; Relacja; W Archiwum Yad Vashem (Testimony, Yad Vashem Archives) 
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            Related events: