- Blood--Circulation1
- Bona, Queen, consort of Sigismund I, King of Poland, 1494-15571
- Books and reading1
- Booksellers and bookselling1
- Booksellers' labels1
- Botany1
- Brass bosses (Bindings)1
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- Burdah (Būṣīrī, Sharaf al-Dīn Muḥammad ibn Saʻīd)1
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- Byzantine literature1
- Bālisī, Abū Bakr ibn Qiwām, -12601
- Bāʻūnīyah, ʻĀʼishah bint Yūsuf, -1516 or 1517. Badīʻīyah1
- Būnī, Aḥmad ibn ʻAlī, -12251
- Cairo Genizah1
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