Columbia subject headings:
Hägerström, Axel, 1868-1939.
Nygren, Anders, 1890-1978.
Theology, Doctrinal--Sweden--History.
Harvard subject headings:
Hägerström, Axel, 1868-1939.
Nygren, Anders, 1890-1978.
Theology, Doctrinal--Sweden--History.
Princeton subject headings: