Columbia subject headings:
Agricultural laborers--Italy--Viterbo (Province)--History.
Agriculture--Italy--Viterbo (Province)--History.
Social history--Medieval, 500-1500.
Viterbo (Italy : Province)--Rural conditions.
Harvard subject headings:
Agricultural laborers--Italy--Viterbo (Province)--History.
Agriculture--Economic aspects--Italy--Viterbo (Province)--History.
Agriculture--Italy--Viterbo (Province)--History.
Cereal products--Italy--Tuscany--History.
Flax industry--Italy--Viterbo (Province)--History.
Social history--Medieval, 500-1500
Tuscany (Italy)--Economic conditions--To 1434.
Tuscany (Italy)--Rural conditions.
Viterbo (Italy : Province)--Rural conditions.
Viticulture--Italy--Lazio--History.
Princeton subject headings:
Agricultural innovations--Italy--Lazio--History.
Agricultural laborers--Italy--Lazio--History.
Agriculture--Italy--Lazio--History.
Cereal products--Italy--Lazio--History.
Horticulture--Italy--Lazio--History.
Lazio (Italy)--Economic conditions.
Lazio (Italy)--Rural conditions.
Peasants--Italy--Lazio--History.
Viticulture--Italy--Lazio--History.
Wine and wine making--Italy--Lazio--History.