@misc{Hübner_J._A._Katechizm,
 author={Hübner, J. A.},
 address={Lwów},
 howpublished={online},
 publisher={[s.n.]},
 language={pol},
 type={książka},
 title={Katechizm hodowania jedwabników J. A. Hübnera},
 keywords={jedwabnictwo, jedwabniki morwowe},
}