Columbia subject headings:
Astronomy, Arab.
Astronomy, Medieval.
Astronomy--Early works to 1800.
Harvard subject headings:
Astronomy, Arab.
Astronomy, Medieval.
Princeton subject headings:
Astronomy, Arab.
Astronomy, Byzantine.
Astronomy, Medieval.
Methodoi psēphophorias diaphorōn hypotheseōn astrynomikōn--History and Criticism.