Columbia subject headings:
Cities and towns--Germany--Palatinate--Guidebooks.
Haardt (Germany)--History--Guidebooks.
Haardt (Germany)--In art.
Rhineland-Palatinate (Germany)--Guidebooks.
Weinstrasse (Germany)--History--Guidebooks.
Weinstrasse (Germany)--In art.
Harvard subject headings:
Cities and towns--Germany--Palatinate--Guidebooks.
Haardt (Germany)--History--Guidebooks.
Haardt (Germany)--In art.
Rhineland-Palatinate (Germany)--Guidebooks.
Weinstrasse (Germany)--History--Guidebooks.
Weinstrasse (Germany)--In art.
Princeton subject headings: