Columbia subject headings:
Harvard subject headings:
Catholic hospitals--Spain--San Lorenzo del Escorial--History--16th century.
Hospital Real de Laborantes de El Escorial--History.
Hospital Real de Laborantes de El Escorial.
Princeton subject headings:
Charities--Spain--San Lorenzo del Escorial--History.
Hospital Real de Laborantes de El Escorial.
Hospitals--Spain--San Lorenzo del Escorial--History.