Columbia subject headings:
Harvard subject headings:
German literature--20th century--History and criticism
German literature--History and criticism
Mines and mineral resources in literature.
Uranium mines and mining--In literature.
Wismut GmbH--In literature.
Wismut, SDAG--In literature.
Princeton subject headings:
German literature--20th century--History and criticism.
Uranium mines and mining--In literature.
Wismut, SDAG--In literature.