Columbia subject headings:
Families--Spain--País Vasco--History.
País Vasco (Spain)--Social conditions.
Harvard subject headings:
Families--Spain--History.
Families--Spain--País Vasco--History.
Latin America--Social conditions.
País Vasco (Spain)--Social conditions.
Spain--Social conditions--To 1800.
Princeton subject headings:
Families--Spain--History.
Families--Spain--País Vasco--History.
Latin America--Social conditions.
País Vasco (Spain)--Social conditions.
Spain--Social conditions--To 1800.