Given name: I Family name: Cygenbok
- YES
- Male
- I
- Cygenbok
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                                        a dentist, Zamenhofa Street No. 7, flat 5 
- medicine
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                                        Warsaw Telephone Directory 1939 (SASTW - Spis Abonentow Sieci Telefonicznej m. st. Warszawy 1939): C. Ignacy, doctor dentist, Zlota Street No. 71, 6-19-26 
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