id	keyword
american_scientific_journal-4397	villages
american_scientific_journal-4397	environment
american_scientific_journal-4397	people
american_scientific_journal-4397	craft
american_scientific_journal-4397	ninh
american_scientific_journal-4397	bac
american_scientific_journal-4397	pollution
american_scientific_journal-4397	craft villages
american_scientific_journal-4397	result
american_scientific_journal-4397	research
american_scientific_journal-4397	security
american_scientific_journal-4397	vietnam
american_scientific_journal-4397	production