Columbia subject headings:
Ghosts--Comic books, strips, etc.
Graphic novels--Mexico.
Violence--Comic books, strips, etc.
Harvard subject headings:
Ghosts--Comic books, strips, etc.
Graphic novels--Mexico.
Violence--Comic books, strips, etc.
Princeton subject headings:
Ghosts--Comic books, strips, etc.
Graphic novels--Mexico.
Violence--Comic books, strips, etc.