Columbia subject headings:
Beira Region (Portugal)--Economic conditions.
Beira Region (Portugal)--History.
Beira Region (Portugal)--Social conditions.
Estremadura (Portugal)--History.
Estremadura (Portugal)--Social conditions.
Land tenure--Portugal--History.
Portugal--History--To 1385.
Harvard subject headings:
Princeton subject headings:
Beira Region (Portugal)--Economic conditions.
Beira Region (Portugal)--History.
Beira Region (Portugal)--Social conditions.
Estremadura (Portugal)--History.
Estremadura (Portugal)--Social conditions.
Land tenure--Portugal--History.
Portugal--History--To 1385.