Introduction and selected astronomical pages of a new Arabic critical edition, and English translation, of Aḥmad ibn Mājid’s al-Fawāʾid fī uṣūl ʿilm al-baḥr wa’l-qawāʿid (Commentaries on the Principles and Foundations of Maritime Science), a 15th-century classic on Indian Ocean navigation. Edited by Juan Acevedo.

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