Columbia subject headings:
Harvard subject headings:
German language--Middle High German, 1050-1500--Congresses.
German language--Old High German, 750-1050--Syntax--Congresses.
German language--Syntax--Congresses.
Grammar, Comparative and general--Syntax--Congresses.
Historical linguistics--Congresses.
Linguistic change--Congresses.
Princeton subject headings:
German language--Middle High German, 1050-1500--Congresses.