Columbia subject headings:
Harvard subject headings:
German language--Early modern, 1500-1700--Usage.
German language--Grammar, Historical.
German language--Middle High German, 1050-1500--Grammar.
German language--Old High German, 750-1050--Usage.
German language--Usage--History.
Germanic languages--Usage--History.
Pragmatics--History.
Princeton subject headings:
Germanic languages--History.
Germanic languages--Usage.