Columbia subject headings:
Huesca (Spain : Province)--Description and travel.
Lérida (Spain : Province)--Description and travel.
Pyrenees--Description and travel.
Harvard subject headings:
Huesca (Spain : Province)--Description and travel.
Lérida (Spain : Province)--Description and travel.
Pyrenees--Description and travel
Princeton subject headings:
Huesca (Spain : Province)--Description and travel.
Lérida (Spain : Province)--Description and travel.
Pyrenees--Description and travel.