Columbia subject headings:
English language--Grammar.
Pecock, Reginald, 1395?-1460?,
Harvard subject headings:
English language--Grammar
Peacock, Reginald. Repressor.
Pecock, Reginald, 1395?-1460?,
Princeton subject headings:
English language--Middle English, 1100-1500--Grammar.
Pecock, Reginald, 1395?-1460?