Positiones mathematicae, ex algebra, geometria, trigonometria plana et sectionibus conicus selectae / quas ... sibi demonstrandas sumpsere ... Joannes Nepom. Pflug ... et Jo. Ferd. Kienzelmann ... in Academia Friburgo-Brisgoica mense Julio anno M. DCC. LXVII
No signup. No fees. Yours to keep.




![Cover of [William Wheeler Hubbell, authorized to apply for patents.] by United States. Congress. Senate. Committee on Patents](/img/cover/10200621-M.jpg)
