id	keyword
american_scientific_journal-3928	roads
american_scientific_journal-3928	transport
american_scientific_journal-3928	district
american_scientific_journal-3928	maintenance
american_scientific_journal-3928	development
american_scientific_journal-3928	transportation
american_scientific_journal-3928	research
american_scientific_journal-3928	infrastructure
american_scientific_journal-3928	ghana
american_scientific_journal-3928	world
american_scientific_journal-3928	effects
american_scientific_journal-3928	vehicles
american_scientific_journal-3928	gushegu
american_scientific_journal-3928	technology
american_scientific_journal-3928	engineering
american_scientific_journal-3928	people
american_scientific_journal-3928	journal
american_scientific_journal-3928	sciences