Columbia subject headings:
Harvard subject headings:
Conspiracy theories--History.
Journalism--Germany--History.
Mass media and culture--History.
Press--Germany--History.
Publishers and publishing--Germany--History.
Truthfulness and falsehood--History.
Princeton subject headings:
Conspiracy theories.
Journalism--Germany--History.
Mass media and culture.
Press--Germany--History.
Publishers and publishing--Germany--History.
Truthfulness and falsehood.