Columbia subject headings:
Comics (Graphic works)
Espionage--Comic books, strips, etc.
Genetic engineering--Comic books, strips, etc.
Genetics, Experimental--Comic books, strips, etc.
Graphic novels.
Historical comics.
Horror comics.
Mental illness--Comic books, strips, etc.
Mental illness.
Monsters--Comic books, strips, etc.
Science fiction comics.
Science fiction.
Soldiers--Comic books, strips, etc.
United States--Armed Forces--Recruiting, enlistment, etc.--Comic books, strips, etc.
Harvard subject headings:
Espionage--Comic books, strips, etc.
Genetics, Experimental--Comic books, strips, etc.
Graphic novels
Historical comics
Monsters--Comic books, strips, etc.
Science fiction
Science fiction comics
United States--Armed Forces--Recruiting, enlistment, etc.--Fiction.
Princeton subject headings:
Espionage--Comic books, strips, etc.
Genetics, Experimental--Comic books, strips, etc.
Graphic novels.
Historical comics.
Monsters--Comic books, strips, etc.
Science fiction comics.
Science fiction.