Columbia subject headings:
Harvard subject headings:
Comic books, strips, etc.--Germany (East)--History and criticism--Congresses.
Germany (East)--In literature--Congresses.
Hegen, Hannes. Mosaik--Congresses.
Princeton subject headings:
Comic books, strips, etc.--Germany (East)--History and criticism--Congresses.
Germany (East)--In literature--Congresses.
Hegen, Hannes. Mosaik--Congresses.
Mosaik (Comic strip)--Congresses.