Columbia subject headings:
Architecture--Italy--Guardiagrele.
Art--Italy--Guardiagrele.
Guardiagrele (Italy)--Description and travel.
Harvard subject headings:
Architecture--Italy--Guardiagrele.
Art, Italian--Italy--Guardiagrele.
Christian art and symbolism--Italy--Guardiagrele.
Guardiagrele (Italy)--Buildings, structures, etc.
Guardiagrele (Italy)--Description and travel.
Princeton subject headings:
Architecture--Italy--Guardiagrele.
Art, Italian--Italy--Guardiagrele.
Christian art and symbolism--Italy--Guardiagrele.
Guardiagrele (Italy)--Buildings, structures, etc.
Guardiagrele (Italy)--Description and travel.