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Keywords
- Annotations1
- Arithmetic1
- Astrolabes1
- Astronomical instruments2
- Astronomy1
- Compasses (Mathematical instruments)[remove]3
- Early works3
- Geometry1
- History1
- Islamic countries1
- Manuscripts2
- Manuscripts, Arabic1
- Manuscripts, Medieval1
- Manuscripts, Persian1
- Manuscripts, Spanish1
- Mathematical instruments1
- Mathematics1
- Spain1
- Spain--Madrid1
- Specimens1