Columbia subject headings:
Catholic Church--Doctrines.
Christian ethics--Catholic authors.
Church and social problems--Catholic Church.
Sex--Religious aspects--Catholic Church.
Harvard subject headings:
Catholic Church--Doctrines.
Christian ethics--Catholic authors
Church and social problems--Catholic Church
Sex--Religious aspects--Catholic Church
Princeton subject headings:
Catholic Church--Doctrines.
Christian ethics--Catholic authors.
Church and social problems--Catholic Church.
Sex--Religious aspects--Catholic Church.