@misc{_Wybrane,
 howpublished={online},
 publisher={Statistical Office in Warsaw},
 language={eng},
 language={pol},
 type={e-periodical},
 title={Wybrane Dane o Podregionach, Powiatach i Gminach Województwa Mazowieckiego w 2003 r.},
 keywords={statistical information, mazowieckie voivodship},
}