Columbia subject headings:
German language--Middle High German, 1050-1500.
German literature--Middle High German, 1050-1500--Criticism, Textual.
German literature--Middle High German, 1050-1500--History and criticism.
Harvard subject headings:
German language--Middle High German, 1050-1500--Grammar.
German language--Middle High German, 1050-1500--History.
Princeton subject headings: