Columbia subject headings:
Muris, Johannes de, approximately 1300-approximately 1350.
Music theory--History--500-1400.
Harvard subject headings:
Muris, Johannes de, approximately 1300-approximately 1350.
Music theory--History--500-1400.
Princeton subject headings:
Muris, Johannes de, approximately 1300-approximately 1350.
Music theory--History--500-1400.