Columbia subject headings:
Harvard subject headings:
English language--History
English language--Middle English, 1100-1500--Research.
English language--Old English, ca. 450-1100--Research.
Historical linguistics.
Princeton subject headings:
English language--History.
English language--Middle English, 1100-1500--Research.
English language--Old English, ca. 450-1100--Research.
Historical linguistics.