Columbia subject headings:
Architects--Europe--History--15th century--Congresses.
Architects--Europe--History--16th century--Congresses.
Architecture, Late Gothic--Europe--History--Congresses.
Supervisors, Industrial--Europe--History--15th century--Congresses.
Supervisors, Industrial--Europe--History--16th century--Congresses.
Harvard subject headings:
Architects--Europe--History--15th century.
Architects--Europe--History--16th century.
Architecture, Gothic--Europe--History.
Supervisors, Industrial--Europe--History--15th century.
Supervisors, Industrial--Europe--History--16th century.
Princeton subject headings:
Architects--Europe--History--15th century.
Architects--Europe--History--16th century.
Architecture, Gothic--Europe--History.
Supervisors, Industrial--Europe--History--15th century.
Supervisors, Industrial--Europe--History--16th century.