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ptolemäus
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View Claudii Ptolemaei Opera quae exstant omnia By Ptolemy,Johan Ludvig Heiberg,Franz Johannes Boll,Emilie Boer,Wolfgang Hübner 
Claudii Ptolemaei Opera quae exstant omnia
By Ptolemy,Johan Ludvig Heiberg,Franz Johannes Boll,Emilie Boer,Wolfgang Hübner
View Histoire de l'astronomie ancienne By Jean Baptiste Joseph Delambre 
Histoire de l'astronomie ancienne
By Jean Baptiste Joseph Delambre