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Authors
- Reisch, Gregor, -1525 author2
- Ricettario Fiorentino. 1556.2
- Rueff, Jakob, ca.1500-1558, author2
- Ryff, Walther Hermann, -1548, author2
- Schedel, Hartmann, 1410-1485, author2
- Schrick, Michael Puff von, approximately 1400-14732
- Valverde de Amusco, Juan, approximately 1525-approximately 1588 author2
- Abiosi, Giovanni, active 15th century1
- Abū al-Qāsim Khalaf ibn ʻAbbās al-Zahrāwī, -1013?, author1
- Agricola, Georg, 1494-1555 author1
- Agrippa von Nettesheim, Heinrich Cornelius, 1486-1535, author1
- Albicus, Sigismund, Archbishop of Prague, 1347-14271
- Alcanyís, Lluís, -15061
- Alexander, de Villa Dei1
- Anianus, Magister, active 13th century1
- Aqsarāʼī, Muḥammad ibn Muḥammad, active 14th century1
- Argellata, Pietro, -14231
- Aristotle.1
- Arnaldus, de Villanova, -1311, author1
- Augusti, Quirico degli, fl. ca. 1490, author1