Columbia subject headings:
Harvard subject headings:
Saavedra Fajardo, Diego de, 1584-1648--Political and social views.
Spain--Foreign relations--Switzerland.
Switzerland--Foreign relations--Spain.
Princeton subject headings:
Saavedra Fajardo, Diego de, 1584-1648--Political and social views.
Spain--Foreign relations--Switzerland.
Switzerland--Foreign relations--Spain.