Surname Rząca (Rząca 
) , in all the world, is a rare last name. The family name Rząca is habitual in Eastern Europe, particularly Poland, where it is a rare surname.
| karol boromeusz rząca PL (b. 1833) |
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| tadeusz rząca (b. 1868) |
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teresa rząca-urban Polish physicist, PL (b. 1956) |
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