PAL

Ptolemaeus Arabus et Latinus

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the plane of the meridian ‘the plane of the meridian’

English

References: Alm. Toomer: 80
Translation of:
Greek: τὸ τοῦ μεσημβρινοῦ ἐπίπεδον [Alm. Heiberg: II.5, 98:16]