Columbia subject headings:
Roads--Developing countries--Finance.
Roads--Developing countries--Maintenance and repair--Management.
Roads--Developing countries.
Roads--Maintenance and repair--Data processing.
Harvard subject headings:
Roads--Developing countries--Finance.
Roads--Developing countries--Maintenance and repair--Management.
Roads--Developing countries.
Roads--Maintenance and repair--Data processing.
Princeton subject headings:
Roads--Developing countries--Maintenance and repair--Data processing.
Roads--Developing countries--Maintenance and repair--Management.