@misc{[Constanzó_Miguel_(1739-1814)]_Duracion,
 author={[Constanzó, Miguel (1739-1814)] and Humboldt, Alexander von (1769-1859)},
 howpublished={online},
 language={fre},
 type={rękopis},
 title={Duracion del Paos de Venus de 1769 (Incipit der Unterlage)},
 keywords={rękopisy},
}