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\bibitem{Gasiorowski2010} G{\k a}siorowski S., \textit{Szapira (Szapiro) Majer (Meir) (1887-1933)}, [w:]  \textit{Polski S{\l}ownik Biograficzny}, t. 47, nr 1(192), Krak{\'o}w, 2010, s. 48--50

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