Apian, Peter, 1495-1552, Ptolemy, active 2nd century, Gherardo, da Cremona, 1113 or 1114-1187, Geber, active 13th century. De astronomia libri IX, Duhem, Pierre Maurice Marie, 1861-1916. fmo RIBRL · Norimbergae : Apud Io. Petreium · leaf 96
Astronomiae Gebri 8 … canscu circulo aezd magno in pundis a e z dolia- tuor, erit ergo unuiqtriftp arcuu ae,&ez,&z dfemicirculus.hoc auteeft impoflibile. Circulus ergo a e z magnus,tranfitperpolosduoracirculora a b g & b e d,&hocuo* luimusdeclarare.EtficircuIus aezd iam diuiierit arcus ieparatos circuli a b g, in duo…
Mathematics · Astronomy · Astronomy, Arab · Astronomical instruments · Spherical astronomy · Scientific apparatus and instruments · Imprint 1534
Internet Archive · John Carter Brown Library · Public domain (published before 1931). Free to use for anything.
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