Columbia subject headings:
Harvard subject headings:
Palatinate (Germany)--Description and travel.
Palatinate (Germany)--History.
Rhine River--Description and travel.
Rhine River--History.
Rhineland-Palatinate (Germany)--Description and travel.
Princeton subject headings:
Palatinate (Germany)--Description and travel.
Palatinate (Germany)--History.
Rhine River--Description and travel.
Rhine River--History.
Rhineland-Palatinate (Germany)--Description and travel.