Abraham Ben Dior [Ben David, Harischon] [Josophat Ben Levi] (12. Century)
Ben Dior was a rabbi, he lived in the second half of the 12. century and wrote, beside his main work "On Traditions", an extensive book on Astronomy.

Reference(s):
Allgemeine Enzyklopädie der Wissenschaften und der Künste, Part 1, Vol. 1, p. 158
Illustr. Lexikon der Astronomie, by Adolph Drechsler, Verlag J.J. Weber, Leipzig 1881, p. 5

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