Columbia subject headings:
Motion picture locations--Spain.
Spaghetti Westerns--History and criticism.
Spain--In motion pictures.
Harvard subject headings:
Motion picture locations--Spain.
Motion picture locations--West (U.S.)
Spaghetti Westerns.
Western films--History and criticism
Princeton subject headings:
Motion picture locations--Spain.
Spain--In motion pictures.
Western films--Europe--History and criticism.