Columbia subject headings:
Harvard subject headings:
Bahai Faith--Doctrines
Baháʼuʼlláh, 1817-1892
Covenants--Religious aspects--Bahai Faith
Princeton subject headings:
Bahai Faith.
Baháʼuʼlláh, 1817-1892.
ʻAbduʼl-Bahá, 1844-1921.