id	keyword
american_scientific_journal-4688	water
american_scientific_journal-4688	river
american_scientific_journal-4688	pollution
american_scientific_journal-4688	lake
american_scientific_journal-4688	waste
american_scientific_journal-4688	wastewater
american_scientific_journal-4688	engineering
american_scientific_journal-4688	area
american_scientific_journal-4688	control
american_scientific_journal-4688	chindwin
american_scientific_journal-4688	urban