Columbia subject headings:
Copernicus, Nicolaus, 1473-1543.
Harvard subject headings:
Astronomers--Poland--Biography
Copernicus, Nicolaus, 1473-1543--Homes and haunts.
Copernicus, Nicolaus, 1473-1543.
Princeton subject headings:
Copernicus, Nicolaus, 1473-1543--Homes and haunts.