@misc{Krüger_Piotr_(1580-1639)_Praxis,
 author={Krüger, Piotr (1580-1639) and Bartsch, Jacob (1600-1633)},
 howpublished={online},
 publisher={Andrzej Hünefeld},
 language={lat},
 type={starodruk},
 title={Praxis Trigonometriæ Logarithmicæ Cum Logarithmorum Tabulis ad Triangula tam Plana quam Sphærica sufficientibus : Ad commodiorem usum præceptis brevibus & perspicuis hoc Manuali comprehensa},
 title={Tabula logarithmica quarta continens antilogarithmos ad maiorem radium et ad bina scrupp. secunda totius primi et bessis secundi gradus supputatos},
}