Columbia subject headings:
Harvard subject headings:
Agriculture--Economic aspects--Italy--Perugia (Province)--History--Sources--Catalogs.
Comizio agrario circondariale di Perugia--Archives--Catalogs.
Società economico-agraria di Perugia--Archives--Catalogs.
Princeton subject headings:
Agriculture--Italy--Perugia (Province)--History--Sources.
Comizio agrario circondariale di Perugia--Archives--Catalogs.
Società economico-agraria di Perugia--Archives--Catalogs.