Columbia subject headings:
Harvard subject headings:
Architecture--Portugal--Viseu--History.
Urbanization--Portugal--Viseu--History--17th century.
Urbanization--Portugal--Viseu--History--18th century.
Viseu (Portugal)--Buildings, structures, etc.
Princeton subject headings:
Architecture--Portugal--Viseu--History--17th century.
Architecture--Portugal--Viseu--History--18th century.
Urbanization--Portugal--Viseu--History--17th century.
Urbanization--Portugal--Viseu--History--18th century.
Viseu (Portugal)--Buildings, structures, etc.