Columbia subject headings:
Comics (Graphic works)
Graphic novels.
Moon--Comic books, strips, etc.
Police--Comic books, strips, etc.
Space colonies--Comic books, strips, etc.
Harvard subject headings:
Comics (Graphic works)
Graphic novels
Moon--Comic books, strips, etc.
Police--Comic books, strips, etc.
Space colonies--Comic books, strips, etc.
Princeton subject headings:
Comics (Graphic works)
Fiction.
Moon--Comic books, strips, etc.
Police--Comic books, strips, etc.
Space colonies--Comic books, strips, etc.