Columbia subject headings:
Authors, Mexican--19th century--Biography.
Frías y Soto, Hilarión--Political and social views.
Frías y Soto, Hilarión.
Mexico--History--European intervention, 1861-1867.
Politicians--Mexico--19th century--Biography.
Harvard subject headings:
Authors, Mexican--19th century--Biography
Frías y Soto, Hilarión.
Mexico--History--European intervention, 1861-1867.
Politicians--Mexico--19th century--Biography.
Princeton subject headings:
Frías y Soto, Hilarión.