Columbia subject headings:
Harvard subject headings:
Canal construction workers--Panama--History.
Conquerors--Panama--History.
Globalization--Economic aspects--Panama.
Panama--Colonies.
Panama--History.
Refugees--Panama--History.
Princeton subject headings:
Canal construction workers--Panama--History.
Conquerors--Panama--History.
Globalization--Economic aspects--Panama.
Panama--Colonies.
Panama--History.
Refugees--Panama--History.