Columbia subject headings:
Bible. Amos--Commentaries--History and criticism--Sources.
Bible. Joel--Commentaries--History and criticism--Sources.
Bible. Minor Prophets--Commentaries--History and criticism--Sources.
Bible. Obadiah--Commentaries--History and criticism--Sources.
Harvard subject headings:
Bible. Amos--Commentaries--History--Sources.
Bible. Joel--Commentaries--History--Sources.
Bible. Minor Prophets--Commentaries--History--Sources.
Bible. Obadiah--Commentaries--History--Sources.
Princeton subject headings: