Columbia subject headings:
Debts, External--Congresses.
Debts, Public--Congresses.
Loans, Foreign--Congresses.
Harvard subject headings:
Debts, External--Congresses
Debts, Public--Congresses.
Loans, Foreign--Congresses.
Princeton subject headings:
Debts, External--Congresses.
Debts, Public--Congresses.
Loans, Foreign--Congresses.