Columbia subject headings:
Lunigiana (Italy)--History--Congresses.
Lunigiana (Italy)--Politics and government--Congresses.
Pier, delle Vigne, 1190?-1249--Congresses.
Harvard subject headings:
Lunigiana (Italy)--History--Congresses.
Lunigiana (Italy)--Politics and government--Congresses.
Pier, delle Vigne, 1190?-1249--Congresses.
Princeton subject headings:
Lunigiana (Italy)--History--Congresses.
Lunigiana (Italy)--Politics and government--Congresses.
Pier, delle Vigne, 1190?-1249--Congresses.