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Grzegorz Lato Grzegorz Halama Grzegorz Rasiak Grzegorz Krychowiak Grzegorz Fitelberg Grzegorz Królikiewicz Grzegorz Ciechowski Grzegorz Karnas Grzegorz Schetyna Grzegorz Antoni OgińskiTài liệu tham khảo
WikiPedia: Grzegorz Fitelberg http://uli.nli.org.il/F/?func=direct&doc_number=00... http://data.bibliotheken.nl/id/thes/p264111168 http://www.jewishgen.org/databases/jripl/jridetail... http://mak.bn.org.pl/cgi-bin/KHW/makwww.exe?BM=1&N... http://www.sztetl.org.pl/pl/article/warszawa/10,lu... http://www.polskaniezwykla.pl/web/place/27919,wars... https://trove.nla.gov.au/people/1496433 https://fitelbergcompetition.com/en https://aleph.nkp.cz/F/?func=find-c&local_base=aut... https://catalogue.bnf.fr/ark:/12148/cb13824987q