@misc{Boratyński_Adam_Quercus_1980-1984,
 author={Boratyński, Adam},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 howpublished={online},
 year={1980-1984},
 title={Quercus petraea (Matt.) Liebl.},
 type={Image},
 URL={http://rcin.org.pl/Content/190903/PDF/KOR001_224455_1980-1984_Quercus-.pdf},
 keywords={botanical drawings, sessile oak},
}