Columbia subject headings:
Political science.
Ubaldi, Baldo degli, 1327?-1400.
Harvard subject headings:
Ubaldi, Baldo degli, 1327?-1400--Contributions in political science.
Ubaldi, Baldo degli, 1327?-1400.
Princeton subject headings:
Ubaldi, Baldo degli, 1327?-1400--Contributions in political science.