Columbia subject headings:
Catholic Church--Doctrines.
Christian ethics--Congresses.
Natural law.
Sex--Religious aspects--Catholic Church.
Sexual ethics.
Theological anthropology--Christianity--Congresses.
Harvard subject headings:
Catholic Church--Doctrines--History--Congresses.
Christian ethics--Catholic authors--History--Congresses.
Natural law--History--Congresses.
Philosophy of nature--History--Congresses.
Sexual ethics--History--Congresses.
Princeton subject headings: