Columbia subject headings:
Business enterprises--Spain--History--Statistics.
Business enterprises--Spain--History.
Industries--Spain--History--Statistics.
Industries--Spain--History.
Regional planning--Spain--History--Statistics.
Regional planning--Spain--History.
Harvard subject headings:
Princeton subject headings:
Business enterprises--Spain--History--Statistics.
Business enterprises--Spain--History.
Industrialization--Spain--History.
Industries--Spain--History--Statistics.
Industries--Spain--History.
Regional planning--Spain--History--Statistics.
Regional planning--Spain--History.