Columbia subject headings:
Graphic novels.
Imaginary places--Comic books, strips, etc.
Scientists--Comic books, strips, etc.
Voyages and travels--Comic books, strips, etc.
Harvard subject headings:
Comics (Graphic works)
Graphic novels
Imaginary places--Comic books, strips, etc.
Science fiction comics.
Scientists--Comic books, strips, etc.
Voyages and travels--Comic books, strips, etc.
Princeton subject headings: