@misc{Gabryl_Franciszek_(1866–1914)_System_1899,
 author={Gabryl, Franciszek (1866–1914)},
 copyright={Public Domain},
 address={Kraków},
 howpublished={online},
 year={1899},
 publisher={Uniwersytet Jagielloński},
 language={pol},
 title={System filozofii. T. 1, Logika formalna},
 type={Text},
 keywords={handbook of logic, handbook of philosophy},
}