Columbia subject headings:
City planning--Spain--Santander--History--19th century.
City planning--Spain--Santander--History--20th century.
Urbanization--Spain--Santander.
Harvard subject headings:
City planning--Spain--Santander--History--19th century.
City planning--Spain--Santander--History--20th century.
Urbanization--Spain--Santander.
Princeton subject headings: