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Olszewka

Olszewka was formerly part of the German Empire. In the German Empire, the place was called Olszewka.
The place is now called Olszewka and belongs to Poland.

Historical place name Country Administration Time
Olszewka Russian Empire Prasnyš 1914
Olszewka Poland Przasnysz 1919
Olszewka German Empire Praschnitz 1939
Olszewka Poland Przasnysz 1945
Olszewka Poland Ostrołęka 1992