Columbia subject headings:
Harvard subject headings:
China--History--Ming dynasty, 1368-1644--Congresses.
China--Kings and rulers--Tombs--Congresses.
Fortification--China--Beijing--Congresses.
Juyong Guan (China)--Congresses.
Juyongguan (Beijing, China)--Congresses.
Ming Tombs (China)--Congresses.
Sepulchral monuments--China--Congresses.
Princeton subject headings:
China--History--Ming dynasty 1368-1644--Congresses.
China--Kings and rulers--Tombs--Congresses.
Great Wall of China (China)--History--Congresses.
Ming Tombs (China)--History--Congresses.