id	keyword
american_scientific_journal-2623	city
american_scientific_journal-2623	eco
american_scientific_journal-2623	development
american_scientific_journal-2623	urban
american_scientific_journal-2623	cities
american_scientific_journal-2623	planning
american_scientific_journal-2623	sustainability
american_scientific_journal-2623	technology
american_scientific_journal-2623	research
american_scientific_journal-2623	concept
american_scientific_journal-2623	energy
american_scientific_journal-2623	engineering
american_scientific_journal-2623	scientific
american_scientific_journal-2623	economic
american_scientific_journal-2623	journal
american_scientific_journal-2623	environment
american_scientific_journal-2623	sciences