@misc{Jasnowski_Mieczysław_(1920–1993)_Jerzy_1977,
 author={Jasnowski, Mieczysław (1920–1993)},
 volume={33},
 editor={Research Centre for the Protection of Nature of the Polish Academy of Sciences},
 number={4},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Let's protect Our Indigenous Nature},
 address={Warszawa},
 address={Kraków},
 howpublished={online},
 year={1977},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={pol},
 title={Jerzy Jackowski 1912-1976},
 type={Text},
 URL={http://rcin.org.pl/Content/70707/PDF/KR038_91623_r1977-t33-no4_ChPO-Jasnowski-42-45.pdf},
}