Kalwińszczyna
Kalwińszczyna [kalviɲʂˈt͡ʂɨna] is a village in the administrative district of Gmina Sidra, within Sokółka County, Podlaskie Voivodeship, in north-eastern Poland.
In 1975–1998, the village belonged administratively to the Białystok Voivodeship.
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