Columbia subject headings:
Historic agricultural landscapes--Germany--Rhineland-Palatinate.
Landscape changes--Germany--Rhineland-Palatinate.
Harvard subject headings:
Historic agricultural landscapes--Germany--Rhineland-Palatinate.
Landscape changes--Germany--Rhineland-Palatinate.
Princeton subject headings:
Historic agricultural landscapes--Germany--Rhineland-Palatinate.
Landscape changes--Germany--Rhineland-Palatinate.