id	keyword
american_scientific_journal-4928	water
american_scientific_journal-4928	groundwater
american_scientific_journal-4928	samples
american_scientific_journal-4928	chemical
american_scientific_journal-4928	drinking
american_scientific_journal-4928	journal
american_scientific_journal-4928	technology
american_scientific_journal-4928	research
american_scientific_journal-4928	limit
american_scientific_journal-4928	engineering
american_scientific_journal-4928	concentration
american_scientific_journal-4928	sciences
american_scientific_journal-4928	asrjets
american_scientific_journal-4928	study
american_scientific_journal-4928	quality
american_scientific_journal-4928	values
american_scientific_journal-4928	volume
american_scientific_journal-4928	area