Columbia subject headings:
Crusades--Historiography.
Crusades--Public opinion.
Military history, Medieval.
Social structure--Middle East--History.
Harvard subject headings:
Crusades--Historiography.
Crusades--Public opinion.
Military history, Medieval
Social structure--Middle East--History.
Princeton subject headings:
Crusades--Historiography.
Crusades--Public opinion.
Military history, Medieval.
Social structure--Middle East--History.