Columbia subject headings:
English language--Middle English, 1100-1500--Dialects.
English language--Middle English, 1100-1500--Grammar, Historical.
Harvard subject headings:
English language--Middle English, 1100-1500
English language--Middle English, 1100-1500--Dialects.
English language--Middle English, 1100-1500--Grammar
English language--Middle English, 1100-1500--Grammar, Historical.
Princeton subject headings:
English language--Middle English, 1100-1500--Dialects.
English language--Middle English, 1100-1500--Grammar, Historical.