Columbia subject headings:
Angels--Christianity.
Angels--Judaism.
YaʼItyop̣yā ʼortodoks tawāḥedo béta kerestiyān--Doctrines.
Harvard subject headings:
Angels--Christianity--Congresses.
Angels--Judaism--Congresses.
YaʼItyop̣yā ʼortodoks tawāḥedo béta kerestiyān--Doctrines--Congresses.
Princeton subject headings: