Columbia subject headings:
History--Philosophy--History.
Lovejoy, Arthur O. (Arthur Oncken), 1873-1962.
Philosophy--History.
Harvard subject headings:
History--Philosophy--History
Lovejoy, Arthur O. (Arthur Oncken), 1873-1962.
Philosophy--History
Princeton subject headings:
History--Philosophy--History.
Lovejoy, Arthur O. (Arthur Oncken), 1873-1962.
Philosophy--History.