Title: Ḳovets rishonim ʻal 39 melakhot ; ... Heʻarot u-verurim ʻal 39 melakhot ; Berurim ṿe-tsiyunim be-divre ha-Rabiyah be-masekhet Shabat she-huvʼu ba-posḳim
Subjects: Sabbath (Jewish law), Prohibited work (Jewish law), Commentaries, Talmud
People: Eliezer ben Joel ha-Levi, of Bonn (active 12th century-13th century)