Columbia subject headings:
Harvard subject headings:
Arroyo, João Marcellino, 1861-1930.
Politicians--Portugal--Biography
Portugal--Politics and government--19th century.
Portugal--Politics and government--20th century.
Princeton subject headings:
Arroyo, João Marcellino, 1861-1930.
Politicians--Portugal--Biography.
Portugal--Politics and government--19th century.
Portugal--Politics and government--20th century.