@misc{Hazelhoff_Engel_Hendrik_Een_1943,
 author={Hazelhoff, Engel Hendrik},
 copyright={Public Domain},
 journal={Publications of famous biologists - a collection of prints},
 address={[unknown]},
 howpublished={online},
 year={1943},
 publisher={[unknown]},
 language={dut},
 type={Text},
 title={Een oude strijdvraag: scheiding of menging van zuurstofrijk en zuurstofarm bloed in het kikkerhart},
 URL={http://rcin.org.pl./Content/127256/PDF/WA488_159912_19746_s2481.pdf},
 keywords={Amphibians - heart structure - view of possible separation of arterial and venous blood},
}