@misc{Barral_Jean-Augustin_(1819–1884)_Trilogie,
 author={Barral, Jean-Augustin (1819–1884)},
 howpublished={online},
 publisher={Masson et Fils},
 language={fre},
 type={monografie},
 title={Trilogie agricole},
 keywords={rolnictwo 19w., Francja 19w.},
}