Columbia subject headings:
Harvard subject headings:
Bahai Faith.
ʻAbduʼl-Bahá, 1844-1921
ʻAbduʼl-Bahá, 1844-1921--Philosophy.
Princeton subject headings:
Bahai Faith--Doctrines.
God.
ʻAbduʼl-Bahá, 1844-1921.