Columbia subject headings:
Astrolabes--Early works to 1800.
Manuscripts, Arabic--Turkey--Istanbul--Facsimiles.
Harvard subject headings:
Astrolabes--Early works to 1800.
Manuscripts, Arabic--Turkey--Istanbul--Facsimiles.
Princeton subject headings:
Astrolabes--Early works to 1800.
Manuscripts, Arabic--Turkey--Istanbul--Facsimiles.