Columbia subject headings:
Harvard subject headings:
Cities and towns--Spain--History.
Municipal government--Spain--History.
Spain--Emigration and immigration--History.
Spain--History--Roman period, 218 B.C.-414 A.D.
Princeton subject headings:
Cities and towns, Ancient--Spain.
Rome--Colonies--Administration--History.
Rome--Emigration and immigration--Social aspects--Spain--History.
Sociology, Urban--Spain--History.
Spain--Colonization--History.
Spain--History--Roman period, 218 B.C.-414 A.D.
Urbanization--Spain--History.