Columbia subject headings:
Anonymous writings, German--History and criticism.
Thirty Years' War, 1618-1648--Propaganda.
Zincgref, Julius Wilhelm, 1591-1635--Criticism and interpretation.
Harvard subject headings:
Zincgref, Julius Wilhelm, 1591-1635--Criticism and interpretation.
Princeton subject headings:
Zincgref, Julius Wilhelm, 1591-1635--Criticism and interpretation.