@misc{Verhoeff_Carl_Wilhelm_(1867–1944)_Ueber_1892,
 author={Verhoeff, Carl Wilhelm (1867–1944)},
 copyright={Public Domain},
 address={[Berlin]},
 journal={Publications of famous biologists - a collection of prints},
 howpublished={online},
 year={1892},
 publisher={[unknown]},
 language={ger},
 type={Text},
 title={Ueber Sabulicola Cirsii mihi},
 URL={http://rcin.org.pl/ibd/Content/71088/PDF/412_Verhoeff.pdf},
 keywords={Insects, - bee (Sphecodes - Halictidae) - description of species - North Sea},
}