Tychonis Brahe Triangulorum planorum et sphaericorum praxis arithmetica, qua maximus eorum praesertim in astronomicis usus compendiose explicatur
by Tycho Brahe, F. J. Studnička, Universitní knihovna v Praze
TrigonometryEarly works to 1800AstronomyGeometry
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For young readers
Book data: Open Library