Columbia subject headings:
Harvard subject headings:
Cantabria (Spain)--Economic conditions.
Cantabria (Spain)--History.
Fernández de Isla y Alvear, Juan, 1709-1788.
Princeton subject headings:
Cantabria (Spain)--Economic conditions.
Cantabria (Spain)--History.
Fernández de Isla y Alvear, Juan, 1709-1788.