PAL

Ptolemaeus Arabus et Latinus

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the plane of the horizon ‘the plane of the horizon’

English

References: Alm. Toomer: 62
Translation of:
Greek: τὸ τοῦ ὁρίζοντος ἐπίπεδον [Alm. Heiberg: I.12, 65:7-8]