Columbia subject headings:
Harvard subject headings:
Catholic Church and philosophy.
Ecclesiastical law--Germany (West)
Hölscher, Emil Erich, 1880-
Jurisprudence
Jurisprudence--Germany--History
Law--Philosophy
Petraschek, Karl Otto, 1876-1950.
Princeton subject headings:
Hölscher, Emil Erich, 1880-1935.
Jurisprudence--Germany--History.
Petraschek, Karl Otto, 1876-1950.