Columbia subject headings:
Antiguo contradictor.
Dreyfus y ca.
Trials--Dreyfus y ca.
Harvard subject headings:
Debts, Public--Peru.
Dreyfus Hermanos y Cia.
Finance, Public--Peru
Princeton subject headings:
Debts, Public--Peru.
Dreyfus frères et Compagnie.
Finance, Public--Peru.
Guano.
Peru--Foreign economic relations.