Columbia subject headings:
Harvard subject headings:
Artillery--Europe--History--16th century--Congresses.
Europe--Antiquities--Congresses
Excavations (Archaeology)--Europe--Congresses
Fortification--Europe--History--16th century--Congresses.
Military architecture--Europe--Congresses.
Military art and science--Europe--Technological innovations--History--16th century--Congresses.
Princeton subject headings:
Artillery--Europe--History--16th century--Congresses.
Europe--Antiquities--Congresses.
Excavations (Archaeology)--Europe--Congresses.
Fortification--Europe--History--16th century--Congresses.
Military architecture--Europe--Congresses.
Military art and science--Technological innovations--Europe--History--16th century--Congresses.