5 books • 4 series
Piyyut Commentary in Medieval Ashkenaz (Studia Judaica, #42) (Studia Judaica, Forschungen Zur Wissenschaft Des Judentums)
Clavis Commentariorum of Hebrew Liturgical Poetry in Manuscript. Clavis Commentariorum
Clavis Commentariorum of Hebrew Liturgical Poetry in Manuscript (Clavis Commentariorum Antiquitatis et Medii Aevi, #4)
Rabbinische Kommentare zum Buch Ester (2 vols)
Synagogale Hymnen (Judentum Und Umwelt / Realms of Judaism, #55)