Title: Shiṭot ha-maḥashavah ha-datit shel Abu Yusuf Yaʻḳub al-ḳirḳisani ṿe-Yafet ben ʻAli
Subjects: Karaites
People: Abū Yūsuf Yaʻqūb (731 or 732-798), Japheth ben ʻAli