Columbia subject headings:
Church history--Congresses.
Harnack, Adolf von, 1851-1930--Congresses.
Harvard subject headings:
Church history--Congresses.
Civilization, Modern--European influences--Congresses.
Harnack, Adolf von, 1851-1930--Congresses.
Religion--Philosophy--Congresses
Theology--Congresses
Princeton subject headings:
Church history--Congresses.
Harnack, Adolf von, 1851-1930--Congresses.