@misc{Demel_Kazimierz_(1889–1978)_Od_1931,
 author={Demel, Kazimierz (1889–1978)},
 copyright={Rights Reserved - Restricted Access},
 address={Bydgoszcz},
 address={(Bydgoszcz)},
 journal={Biblioteczka "Ryby"},
 journal={Z Morskiego Laboratorium Rybackiego w Helu},
 howpublished={online},
 year={1931},
 publisher={Nakł. Wydawnictwa "Ryba"},
 publisher={(Drukarnia Bydgoska)},
 language={pol},
 title={Od czego zależą dobre połowy ryb przy Helu},
 keywords={Hel (town), fishery, fishing calendar, fishes - seasonal variations - Poland - 1900-1945, fisheries - Poland - Baltic Sea Coast - 1900-1945, fisheries - Poland - Hel - 1900-1945},
}