Columbia subject headings:
Harvard subject headings:
German language--Old High German, 750-1050--Phonology.
German language--Old High German, 750-1050--Vowels.
Optimality theory (Linguistics)
Typology (Linguistics)
Princeton subject headings:
German language--Old High German, 750-1050--Phonology.
German language--Old High German, 750-1050--Vowels.