Columbia subject headings:
Harvard subject headings:
Architecture, Roman--Congresses.
Engineering--Rome--Congresses.
Mechanics--Rome--Congresses.
Rome--Antiquities--Congresses.
Vitruvius Pollio. De architectura--Congresses.
Princeton subject headings:
Architecture, Roman--Congresses.
Engineering--Rome--Congresses.
Mechanics--Rome--Congresses.
Rome--Antiquities--Congresses.
Vitruvius Pollio. De architectura--Congresses.