@misc{Krüger_Piotr_(1580-1639)_Praxis,
 author={Krüger, Piotr (1580-1639)},
 howpublished={online},
 publisher={apud Joannem Janssonium},
 language={lat},
 type={stary druk},
 title={Praxis trigonometriae logarithmicae cum logarithmorum tabulis ad triangula tam plana quam sphaerica sufficientibus : ad commodiorem usum praeceptis brevibus [et] perspicuis hoc manuali comprehensa},
 keywords={17 w., wydawnictwa przed 1800, stare druki, trygonometria},
}