Columbia subject headings:
Agriculture--Economic aspects--Europe.
Agriculture--Europe--History.
Agriculture--Social aspects--Europe.
Europe--Economic conditions.
Europe--Rural conditions.
Harvard subject headings:
Agriculture--Economic aspects--Europe.
Agriculture--Europe--History
Agriculture--Social aspects--Europe.
Europe--Economic conditions
Europe--Rural conditions
Princeton subject headings:
Agriculture--Economic aspects--Europe.
Agriculture--Europe--History.
Agriculture--Social aspects--Europe.
Europe--Economic conditions.
Europe--Rural conditions.