Columbia subject headings:
Agriculture--Economic aspects--Germany--Eifel.
Eifel (Germany)--Economic conditions.
Eifel (Germany)--Social conditions.
Land use--Germany--Eifel.
Harvard subject headings:
Eifel (Germany)--Rural conditions.
Human geography--Germany--Eifel.
Land use, Rural--Germany--Eifel.
Princeton subject headings: