Columbia subject headings:
Philippines--History--1812-1898.
Philippines--Relations--Spain.
Spain--Colonies--Philippines.
Spain--Relations--Philippines.
Harvard subject headings:
Constitutional history--Philippines
Philippines--History--1812-1898.
Philippines--Relations--Spain--History.
Philippines--Relations--Spain.
Spain--Colonies--Philippines.
Spain--Relations--Philippines--History.
Spain--Relations--Philippines.
Princeton subject headings:
Philippines--History--1812-1898.
Philippines--Relations--Spain.
Spain--Colonies--Philippines.
Spain--Relations--Philippines.