@misc{Kulmatycki_Włodzimierz_Julian_(1895–1939)_W_1931,
 author={Kulmatycki, Włodzimierz Julian (1895–1939)},
 copyright={Public Domain},
 journal={Publications of famous biologists - a collection of prints},
 address={[unknown]},
 address={(Warszawa)},
 howpublished={online},
 year={1931},
 publisher={[unknown]},
 publisher={(Drukarnia St. Niemiry Syn i S-ka)},
 language={pol},
 type={Text},
 title={W sprawie wartości gospodarczej rzek polskich},
 URL={http://rcin.org.pl./Content/79080/PDF/565.pdf},
 keywords={Rivers - fish production - Poland, Rivers - exploitation - Poland},
}