Columbia subject headings:
Argentina--History--1776-1810--Sources.
Argentina--History--1776-1810.
Cevallos, Pedro de, 1715-1778.
Portugal--Foreign relations--Spain.
Spain--Foreign relations--Portugal.
Harvard subject headings:
Argentina--History--1776-1810--Sources.
Argentina--History--1776-1810.
Cevallos, Pedro de, 1715-1778.
Portugal--Foreign relations--Spain.
Spain--Foreign relations--Portugal.
Princeton subject headings:
Argentina--History--1776-1810--Sources.
Argentina--History--1776-1810.
Cevallos, Pedro de, 1715-1778.
Portugal--Foreign relations--Spain.
Spain--Foreign relations--Portugal.