Columbia subject headings:
San Miguel (El Salvador : Department)--Administrative and political divisions.
San Miguel (El Salvador : Department)--Economic conditions.
San Miguel (El Salvador : Department)--Social conditions.
Harvard subject headings:
San Miguel (El Salvador : Department)
San Miguel (El Salvador : Department)--Administrative and political divisions.
San Miguel (El Salvador : Department)--Economic conditions.
San Miguel (El Salvador : Department)--Social conditions.
Princeton subject headings: